20215949

素因数分解:

${\mathrm{13}}^2\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1$

素因数の和:177

約数の個数: 24

約数和(自身を含む): 23281992

約数和(自身を除く): 3066043

約数列:

[1, 13, 37, 53, 61, 169, 481, 689, 793, 1961, 2257, 3233, 6253, 8957, 10309, 25493, 29341, 42029, 119621, 331409, 381433, 546377, 1555073, 20215949]

約数ペア:

[(1, 20215949), (13, 1555073), (37, 546377), (53, 381433), (61, 331409), (169, 119621), (481, 42029), (689, 29341), (793, 25493), (1961, 10309), (2257, 8957), (3233, 6253)]