20152640

素因数分解:

$2^6\times 5^1\times {\mathrm{71}}^1\times {\mathrm{887}}^1$

素因数の和:975

約数の個数: 56

約数和(自身を含む): 48719232

約数和(自身を除く): 28566592

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 71, 80, 142, 160, 284, 320, 355, 568, 710, 887, 1136, 1420, 1774, 2272, 2840, 3548, 4435, 4544, 5680, 7096, 8870, 11360, 14192, 17740, 22720, 28384, 35480, 56768, 62977, 70960, 125954, 141920, 251908, 283840, 314885, 503816, 629770, 1007632, 1259540, 2015264, 2519080, 4030528, 5038160, 10076320, 20152640]

約数ペア:

[(1, 20152640), (2, 10076320), (4, 5038160), (5, 4030528), (8, 2519080), (10, 2015264), (16, 1259540), (20, 1007632), (32, 629770), (40, 503816), (64, 314885), (71, 283840), (80, 251908), (142, 141920), (160, 125954), (284, 70960), (320, 62977), (355, 56768), (568, 35480), (710, 28384), (887, 22720), (1136, 17740), (1420, 14192), (1774, 11360), (2272, 8870), (2840, 7096), (3548, 5680), (4435, 4544)]