20642974

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{211}}^1\times {\mathrm{4447}}^1$

素因数の和:4671

約数の個数: 16

約数和(自身を含む): 33947136

約数和(自身を除く): 13304162

約数列:

[1, 2, 11, 22, 211, 422, 2321, 4447, 4642, 8894, 48917, 97834, 938317, 1876634, 10321487, 20642974]

約数ペア:

[(1, 20642974), (2, 10321487), (11, 1876634), (22, 938317), (211, 97834), (422, 48917), (2321, 8894), (4447, 4642)]