21098870

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{9547}}^1$

素因数の和:9584

約数の個数: 32

約数和(自身を含む): 43309728

約数和(自身を除く): 22210858

約数列:

[1, 2, 5, 10, 13, 17, 26, 34, 65, 85, 130, 170, 221, 442, 1105, 2210, 9547, 19094, 47735, 95470, 124111, 162299, 248222, 324598, 620555, 811495, 1241110, 1622990, 2109887, 4219774, 10549435, 21098870]

約数ペア:

[(1, 21098870), (2, 10549435), (5, 4219774), (10, 2109887), (13, 1622990), (17, 1241110), (26, 811495), (34, 620555), (65, 324598), (85, 248222), (130, 162299), (170, 124111), (221, 95470), (442, 47735), (1105, 19094), (2210, 9547)]