257438880

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{79}}^1$

素因数の和:204

約数の個数: 288

約数和(自身を含む): 930908160

約数和(自身を除く): 673469280

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 31, 32, 36, 40, 45, 48, 60, 62, 72, 73, 79, 80, 90, 93, 96, 120, 124, 144, 146, 155, 158, 160, 180, 186, 219, 237, 240, 248, 279, 288, 292, 310, 316, 360, 365, 372, 395, 438, 465, 474, 480, 496, 558, 584, 620, 632, 657, 711, 720, 730, 744, 790, 876, 930, 948, 992, 1095, 1116, 1168, 1185, 1240, 1264, 1314, 1395, 1422, 1440, 1460, 1488, 1580, 1752, 1860, 1896, 2190, 2232, 2263, 2336, 2370, 2449, 2480, 2528, 2628, 2790, 2844, 2920, 2976, 3160, 3285, 3504, 3555, 3720, 3792, 4380, 4464, 4526, 4740, 4898, 4960, 5256, 5580, 5688, 5767, 5840, 6320, 6570, 6789, 7008, 7110, 7347, 7440, 7584, 8760, 8928, 9052, 9480, 9796, 10512, 11160, 11315, 11376, 11534, 11680, 12245, 12640, 13140, 13578, 14220, 14694, 14880, 17301, 17520, 18104, 18960, 19592, 20367, 21024, 22041, 22320, 22630, 22752, 23068, 24490, 26280, 27156, 28440, 28835, 29388, 33945, 34602, 35040, 36208, 36735, 37920, 39184, 40734, 44082, 44640, 45260, 46136, 48980, 51903, 52560, 54312, 56880, 57670, 58776, 67890, 69204, 72416, 73470, 78368, 81468, 86505, 88164, 90520, 92272, 97960, 101835, 103806, 105120, 108624, 110205, 113760, 115340, 117552, 135780, 138408, 146940, 162936, 173010, 176328, 178777, 181040, 184544, 195920, 203670, 207612, 217248, 220410, 230680, 235104, 259515, 271560, 276816, 293880, 325872, 346020, 352656, 357554, 362080, 391840, 407340, 415224, 440820, 461360, 519030, 536331, 543120, 553632, 587760, 651744, 692040, 705312, 715108, 814680, 830448, 881640, 893885, 922720, 1038060, 1072662, 1086240, 1175520, 1384080, 1430216, 1608993, 1629360, 1660896, 1763280, 1787770, 2076120, 2145324, 2681655, 2768160, 2860432, 3217986, 3258720, 3526560, 3575540, 4152240, 4290648, 5363310, 5720864, 6435972, 7151080, 8044965, 8304480, 8581296, 10726620, 12871944, 14302160, 16089930, 17162592, 21453240, 25743888, 28604320, 32179860, 42906480, 51487776, 64359720, 85812960, 128719440, 257438880]

約数ペア:

[(1, 257438880), (2, 128719440), (3, 85812960), (4, 64359720), (5, 51487776), (6, 42906480), (8, 32179860), (9, 28604320), (10, 25743888), (12, 21453240), (15, 17162592), (16, 16089930), (18, 14302160), (20, 12871944), (24, 10726620), (30, 8581296), (31, 8304480), (32, 8044965), (36, 7151080), (40, 6435972), (45, 5720864), (48, 5363310), (60, 4290648), (62, 4152240), (72, 3575540), (73, 3526560), (79, 3258720), (80, 3217986), (90, 2860432), (93, 2768160), (96, 2681655), (120, 2145324), (124, 2076120), (144, 1787770), (146, 1763280), (155, 1660896), (158, 1629360), (160, 1608993), (180, 1430216), (186, 1384080), (219, 1175520), (237, 1086240), (240, 1072662), (248, 1038060), (279, 922720), (288, 893885), (292, 881640), (310, 830448), (316, 814680), (360, 715108), (365, 705312), (372, 692040), (395, 651744), (438, 587760), (465, 553632), (474, 543120), (480, 536331), (496, 519030), (558, 461360), (584, 440820), (620, 415224), (632, 407340), (657, 391840), (711, 362080), (720, 357554), (730, 352656), (744, 346020), (790, 325872), (876, 293880), (930, 276816), (948, 271560), (992, 259515), (1095, 235104), (1116, 230680), (1168, 220410), (1185, 217248), (1240, 207612), (1264, 203670), (1314, 195920), (1395, 184544), (1422, 181040), (1440, 178777), (1460, 176328), (1488, 173010), (1580, 162936), (1752, 146940), (1860, 138408), (1896, 135780), (2190, 117552), (2232, 115340), (2263, 113760), (2336, 110205), (2370, 108624), (2449, 105120), (2480, 103806), (2528, 101835), (2628, 97960), (2790, 92272), (2844, 90520), (2920, 88164), (2976, 86505), (3160, 81468), (3285, 78368), (3504, 73470), (3555, 72416), (3720, 69204), (3792, 67890), (4380, 58776), (4464, 57670), (4526, 56880), (4740, 54312), (4898, 52560), (4960, 51903), (5256, 48980), (5580, 46136), (5688, 45260), (5767, 44640), (5840, 44082), (6320, 40734), (6570, 39184), (6789, 37920), (7008, 36735), (7110, 36208), (7347, 35040), (7440, 34602), (7584, 33945), (8760, 29388), (8928, 28835), (9052, 28440), (9480, 27156), (9796, 26280), (10512, 24490), (11160, 23068), (11315, 22752), (11376, 22630), (11534, 22320), (11680, 22041), (12245, 21024), (12640, 20367), (13140, 19592), (13578, 18960), (14220, 18104), (14694, 17520), (14880, 17301)]