21913489

素因数分解:

${\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{139}}^1\times {\mathrm{181}}^1$

素因数の和:400

約数の個数: 16

約数和(自身を含む): 24256960

約数和(自身を除く): 2343471

約数列:

[1, 13, 67, 139, 181, 871, 1807, 2353, 9313, 12127, 25159, 121069, 157651, 327067, 1685653, 21913489]

約数ペア:

[(1, 21913489), (13, 1685653), (67, 327067), (139, 157651), (181, 121069), (871, 25159), (1807, 12127), (2353, 9313)]