20391998

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{821}}^1\times {\mathrm{1129}}^1$

素因数の和:1963

約数の個数: 16

約数和(自身を含む): 33438960

約数和(自身を除く): 13046962

約数列:

[1, 2, 11, 22, 821, 1129, 1642, 2258, 9031, 12419, 18062, 24838, 926909, 1853818, 10195999, 20391998]

約数ペア:

[(1, 20391998), (2, 10195999), (11, 1853818), (22, 926909), (821, 24838), (1129, 18062), (1642, 12419), (2258, 9031)]