81693680

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{32941}}^1$

素因数の和:32985

約数の個数: 40

約数和(自身を含む): 196070784

約数和(自身を除く): 114377104

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 32941, 65882, 131764, 164705, 263528, 329410, 527056, 658820, 1021171, 1317640, 2042342, 2635280, 4084684, 5105855, 8169368, 10211710, 16338736, 20423420, 40846840, 81693680]

約数ペア:

[(1, 81693680), (2, 40846840), (4, 20423420), (5, 16338736), (8, 10211710), (10, 8169368), (16, 5105855), (20, 4084684), (31, 2635280), (40, 2042342), (62, 1317640), (80, 1021171), (124, 658820), (155, 527056), (248, 329410), (310, 263528), (496, 164705), (620, 131764), (1240, 65882), (2480, 32941)]