81984240

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{461}}^1$

素因数の和:512

約数の個数: 240

約数和(自身を含む): 312792480

約数和(自身を除く): 230808240

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 19, 20, 24, 26, 30, 36, 38, 39, 40, 45, 48, 52, 57, 60, 65, 72, 76, 78, 80, 90, 95, 104, 114, 117, 120, 130, 144, 152, 156, 171, 180, 190, 195, 208, 228, 234, 240, 247, 260, 285, 304, 312, 342, 360, 380, 390, 456, 461, 468, 494, 520, 570, 585, 624, 684, 720, 741, 760, 780, 855, 912, 922, 936, 988, 1040, 1140, 1170, 1235, 1368, 1383, 1482, 1520, 1560, 1710, 1844, 1872, 1976, 2223, 2280, 2305, 2340, 2470, 2736, 2766, 2964, 3120, 3420, 3688, 3705, 3952, 4149, 4446, 4560, 4610, 4680, 4940, 5532, 5928, 5993, 6840, 6915, 7376, 7410, 8298, 8759, 8892, 9220, 9360, 9880, 11064, 11115, 11856, 11986, 13680, 13830, 14820, 16596, 17518, 17784, 17979, 18440, 19760, 20745, 22128, 22230, 23972, 26277, 27660, 29640, 29965, 33192, 35036, 35568, 35958, 36880, 41490, 43795, 44460, 47944, 52554, 53937, 55320, 59280, 59930, 66384, 70072, 71916, 78831, 82980, 87590, 88920, 89895, 95888, 105108, 107874, 110640, 113867, 119860, 131385, 140144, 143832, 157662, 165960, 175180, 177840, 179790, 210216, 215748, 227734, 239720, 262770, 269685, 287664, 315324, 331920, 341601, 350360, 359580, 394155, 420432, 431496, 455468, 479440, 525540, 539370, 569335, 630648, 683202, 700720, 719160, 788310, 862992, 910936, 1024803, 1051080, 1078740, 1138670, 1261296, 1366404, 1438320, 1576620, 1708005, 1821872, 2049606, 2102160, 2157480, 2277340, 2732808, 3153240, 3416010, 4099212, 4314960, 4554680, 5124015, 5465616, 6306480, 6832020, 8198424, 9109360, 10248030, 13664040, 16396848, 20496060, 27328080, 40992120, 81984240]

約数ペア:

[(1, 81984240), (2, 40992120), (3, 27328080), (4, 20496060), (5, 16396848), (6, 13664040), (8, 10248030), (9, 9109360), (10, 8198424), (12, 6832020), (13, 6306480), (15, 5465616), (16, 5124015), (18, 4554680), (19, 4314960), (20, 4099212), (24, 3416010), (26, 3153240), (30, 2732808), (36, 2277340), (38, 2157480), (39, 2102160), (40, 2049606), (45, 1821872), (48, 1708005), (52, 1576620), (57, 1438320), (60, 1366404), (65, 1261296), (72, 1138670), (76, 1078740), (78, 1051080), (80, 1024803), (90, 910936), (95, 862992), (104, 788310), (114, 719160), (117, 700720), (120, 683202), (130, 630648), (144, 569335), (152, 539370), (156, 525540), (171, 479440), (180, 455468), (190, 431496), (195, 420432), (208, 394155), (228, 359580), (234, 350360), (240, 341601), (247, 331920), (260, 315324), (285, 287664), (304, 269685), (312, 262770), (342, 239720), (360, 227734), (380, 215748), (390, 210216), (456, 179790), (461, 177840), (468, 175180), (494, 165960), (520, 157662), (570, 143832), (585, 140144), (624, 131385), (684, 119860), (720, 113867), (741, 110640), (760, 107874), (780, 105108), (855, 95888), (912, 89895), (922, 88920), (936, 87590), (988, 82980), (1040, 78831), (1140, 71916), (1170, 70072), (1235, 66384), (1368, 59930), (1383, 59280), (1482, 55320), (1520, 53937), (1560, 52554), (1710, 47944), (1844, 44460), (1872, 43795), (1976, 41490), (2223, 36880), (2280, 35958), (2305, 35568), (2340, 35036), (2470, 33192), (2736, 29965), (2766, 29640), (2964, 27660), (3120, 26277), (3420, 23972), (3688, 22230), (3705, 22128), (3952, 20745), (4149, 19760), (4446, 18440), (4560, 17979), (4610, 17784), (4680, 17518), (4940, 16596), (5532, 14820), (5928, 13830), (5993, 13680), (6840, 11986), (6915, 11856), (7376, 11115), (7410, 11064), (8298, 9880), (8759, 9360), (8892, 9220)]