12499640

素因数分解:

$2^3\times 5^1\times {\mathrm{211}}^1\times {\mathrm{1481}}^1$

素因数の和:1703

約数の個数: 32

約数和(自身を含む): 28276560

約数和(自身を除く): 15776920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 211, 422, 844, 1055, 1481, 1688, 2110, 2962, 4220, 5924, 7405, 8440, 11848, 14810, 29620, 59240, 312491, 624982, 1249964, 1562455, 2499928, 3124910, 6249820, 12499640]

約数ペア:

[(1, 12499640), (2, 6249820), (4, 3124910), (5, 2499928), (8, 1562455), (10, 1249964), (20, 624982), (40, 312491), (211, 59240), (422, 29620), (844, 14810), (1055, 11848), (1481, 8440), (1688, 7405), (2110, 5924), (2962, 4220)]