20508986

素因数分解:

$2^1\times {\mathrm{53}}^1\times {\mathrm{163}}^1\times {\mathrm{1187}}^1$

素因数の和:1405

約数の個数: 16

約数和(自身を含む): 31562784

約数和(自身を除く): 11053798

約数列:

[1, 2, 53, 106, 163, 326, 1187, 2374, 8639, 17278, 62911, 125822, 193481, 386962, 10254493, 20508986]

約数ペア:

[(1, 20508986), (2, 10254493), (53, 386962), (106, 193481), (163, 125822), (326, 62911), (1187, 17278), (2374, 8639)]