20811856

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{100057}}^1$

素因数の和:100078

約数の個数: 20

約数和(自身を含む): 43425172

約数和(自身を除く): 22613316

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 100057, 200114, 400228, 800456, 1300741, 1600912, 2601482, 5202964, 10405928, 20811856]

約数ペア:

[(1, 20811856), (2, 10405928), (4, 5202964), (8, 2601482), (13, 1600912), (16, 1300741), (26, 800456), (52, 400228), (104, 200114), (208, 100057)]