128357840

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{1487}}^1$

素因数の和:1596

約数の個数: 80

約数和(自身を含む): 325479168

約数和(自身を除く): 197121328

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 83, 104, 130, 166, 208, 260, 332, 415, 520, 664, 830, 1040, 1079, 1328, 1487, 1660, 2158, 2974, 3320, 4316, 5395, 5948, 6640, 7435, 8632, 10790, 11896, 14870, 17264, 19331, 21580, 23792, 29740, 38662, 43160, 59480, 77324, 86320, 96655, 118960, 123421, 154648, 193310, 246842, 309296, 386620, 493684, 617105, 773240, 987368, 1234210, 1546480, 1604473, 1974736, 2468420, 3208946, 4936840, 6417892, 8022365, 9873680, 12835784, 16044730, 25671568, 32089460, 64178920, 128357840]

約数ペア:

[(1, 128357840), (2, 64178920), (4, 32089460), (5, 25671568), (8, 16044730), (10, 12835784), (13, 9873680), (16, 8022365), (20, 6417892), (26, 4936840), (40, 3208946), (52, 2468420), (65, 1974736), (80, 1604473), (83, 1546480), (104, 1234210), (130, 987368), (166, 773240), (208, 617105), (260, 493684), (332, 386620), (415, 309296), (520, 246842), (664, 193310), (830, 154648), (1040, 123421), (1079, 118960), (1328, 96655), (1487, 86320), (1660, 77324), (2158, 59480), (2974, 43160), (3320, 38662), (4316, 29740), (5395, 23792), (5948, 21580), (6640, 19331), (7435, 17264), (8632, 14870), (10790, 11896)]