21353929

素因数分解:

${\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{443}}^1$

素因数の和:564

約数の個数: 16

約数和(自身を含む): 23443200

約数和(自身を除く): 2089271

約数列:

[1, 19, 43, 59, 443, 817, 1121, 2537, 8417, 19049, 26137, 48203, 361931, 496603, 1123891, 21353929]

約数ペア:

[(1, 21353929), (19, 1123891), (43, 496603), (59, 361931), (443, 48203), (817, 26137), (1121, 19049), (2537, 8417)]