61818280

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{21767}}^1$

素因数の和:21849

約数の個数: 32

約数和(自身を含む): 141056640

約数和(自身を除く): 79238360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 21767, 43534, 87068, 108835, 174136, 217670, 435340, 870680, 1545457, 3090914, 6181828, 7727285, 12363656, 15454570, 30909140, 61818280]

約数ペア:

[(1, 61818280), (2, 30909140), (4, 15454570), (5, 12363656), (8, 7727285), (10, 6181828), (20, 3090914), (40, 1545457), (71, 870680), (142, 435340), (284, 217670), (355, 174136), (568, 108835), (710, 87068), (1420, 43534), (2840, 21767)]