261240720

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{73}}^1$

素因数の和:170

約数の個数: 320

約数和(自身を含む): 937273344

約数和(自身を除く): 676032624

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 31, 37, 39, 40, 48, 52, 60, 62, 65, 73, 74, 78, 80, 93, 104, 111, 120, 124, 130, 146, 148, 155, 156, 185, 186, 195, 208, 219, 222, 240, 248, 260, 292, 296, 310, 312, 365, 370, 372, 390, 403, 438, 444, 465, 481, 496, 520, 555, 584, 592, 620, 624, 730, 740, 744, 780, 806, 876, 888, 930, 949, 962, 1040, 1095, 1110, 1147, 1168, 1209, 1240, 1443, 1460, 1480, 1488, 1560, 1612, 1752, 1776, 1860, 1898, 1924, 2015, 2190, 2220, 2263, 2294, 2405, 2418, 2480, 2701, 2847, 2886, 2920, 2960, 3120, 3224, 3441, 3504, 3720, 3796, 3848, 4030, 4380, 4440, 4526, 4588, 4745, 4810, 4836, 5402, 5694, 5735, 5772, 5840, 6045, 6448, 6789, 6882, 7215, 7440, 7592, 7696, 8060, 8103, 8760, 8880, 9052, 9176, 9490, 9620, 9672, 10804, 11315, 11388, 11470, 11544, 12090, 13505, 13578, 13764, 14235, 14430, 14911, 15184, 16120, 16206, 17205, 17520, 18104, 18352, 18980, 19240, 19344, 21608, 22630, 22776, 22940, 23088, 24180, 27010, 27156, 27528, 28470, 28860, 29419, 29822, 32240, 32412, 33945, 34410, 35113, 36208, 37960, 38480, 40515, 43216, 44733, 45260, 45552, 45880, 48360, 54020, 54312, 55056, 56940, 57720, 58838, 59644, 64824, 67890, 68820, 70226, 74555, 75920, 81030, 83731, 88257, 89466, 90520, 91760, 96720, 105339, 108040, 108624, 113880, 115440, 117676, 119288, 129648, 135780, 137640, 140452, 147095, 149110, 162060, 167462, 175565, 176514, 178932, 181040, 210678, 216080, 223665, 227760, 235352, 238576, 251193, 271560, 275280, 280904, 294190, 298220, 324120, 334924, 351130, 353028, 357864, 418655, 421356, 441285, 447330, 470704, 502386, 526695, 543120, 561808, 588380, 596440, 648240, 669848, 702260, 706056, 715728, 837310, 842712, 882570, 894660, 1004772, 1053390, 1088503, 1176760, 1192880, 1255965, 1339696, 1404520, 1412112, 1674620, 1685424, 1765140, 1789320, 2009544, 2106780, 2177006, 2353520, 2511930, 2809040, 3265509, 3349240, 3530280, 3578640, 4019088, 4213560, 4354012, 5023860, 5442515, 6531018, 6698480, 7060560, 8427120, 8708024, 10047720, 10885030, 13062036, 16327545, 17416048, 20095440, 21770060, 26124072, 32655090, 43540120, 52248144, 65310180, 87080240, 130620360, 261240720]

約数ペア:

[(1, 261240720), (2, 130620360), (3, 87080240), (4, 65310180), (5, 52248144), (6, 43540120), (8, 32655090), (10, 26124072), (12, 21770060), (13, 20095440), (15, 17416048), (16, 16327545), (20, 13062036), (24, 10885030), (26, 10047720), (30, 8708024), (31, 8427120), (37, 7060560), (39, 6698480), (40, 6531018), (48, 5442515), (52, 5023860), (60, 4354012), (62, 4213560), (65, 4019088), (73, 3578640), (74, 3530280), (78, 3349240), (80, 3265509), (93, 2809040), (104, 2511930), (111, 2353520), (120, 2177006), (124, 2106780), (130, 2009544), (146, 1789320), (148, 1765140), (155, 1685424), (156, 1674620), (185, 1412112), (186, 1404520), (195, 1339696), (208, 1255965), (219, 1192880), (222, 1176760), (240, 1088503), (248, 1053390), (260, 1004772), (292, 894660), (296, 882570), (310, 842712), (312, 837310), (365, 715728), (370, 706056), (372, 702260), (390, 669848), (403, 648240), (438, 596440), (444, 588380), (465, 561808), (481, 543120), (496, 526695), (520, 502386), (555, 470704), (584, 447330), (592, 441285), (620, 421356), (624, 418655), (730, 357864), (740, 353028), (744, 351130), (780, 334924), (806, 324120), (876, 298220), (888, 294190), (930, 280904), (949, 275280), (962, 271560), (1040, 251193), (1095, 238576), (1110, 235352), (1147, 227760), (1168, 223665), (1209, 216080), (1240, 210678), (1443, 181040), (1460, 178932), (1480, 176514), (1488, 175565), (1560, 167462), (1612, 162060), (1752, 149110), (1776, 147095), (1860, 140452), (1898, 137640), (1924, 135780), (2015, 129648), (2190, 119288), (2220, 117676), (2263, 115440), (2294, 113880), (2405, 108624), (2418, 108040), (2480, 105339), (2701, 96720), (2847, 91760), (2886, 90520), (2920, 89466), (2960, 88257), (3120, 83731), (3224, 81030), (3441, 75920), (3504, 74555), (3720, 70226), (3796, 68820), (3848, 67890), (4030, 64824), (4380, 59644), (4440, 58838), (4526, 57720), (4588, 56940), (4745, 55056), (4810, 54312), (4836, 54020), (5402, 48360), (5694, 45880), (5735, 45552), (5772, 45260), (5840, 44733), (6045, 43216), (6448, 40515), (6789, 38480), (6882, 37960), (7215, 36208), (7440, 35113), (7592, 34410), (7696, 33945), (8060, 32412), (8103, 32240), (8760, 29822), (8880, 29419), (9052, 28860), (9176, 28470), (9490, 27528), (9620, 27156), (9672, 27010), (10804, 24180), (11315, 23088), (11388, 22940), (11470, 22776), (11544, 22630), (12090, 21608), (13505, 19344), (13578, 19240), (13764, 18980), (14235, 18352), (14430, 18104), (14911, 17520), (15184, 17205), (16120, 16206)]