21017953

素因数分解:

${\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{1607}}^1$

素因数の和:1688

約数の個数: 16

約数和(自身を含む): 24312960

約数和(自身を除く): 3295007

約数列:

[1, 11, 29, 41, 319, 451, 1189, 1607, 13079, 17677, 46603, 65887, 512633, 724757, 1910723, 21017953]

約数ペア:

[(1, 21017953), (11, 1910723), (29, 724757), (41, 512633), (319, 65887), (451, 46603), (1189, 17677), (1607, 13079)]