20504090

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{28879}}^1$

素因数の和:28957

約数の個数: 16

約数和(自身を含む): 37428480

約数和(自身を除く): 16924390

約数列:

[1, 2, 5, 10, 71, 142, 355, 710, 28879, 57758, 144395, 288790, 2050409, 4100818, 10252045, 20504090]

約数ペア:

[(1, 20504090), (2, 10252045), (5, 4100818), (10, 2050409), (71, 288790), (142, 144395), (355, 57758), (710, 28879)]