20742891

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{163}}^1\times {\mathrm{251}}^1$

素因数の和:443

約数の個数: 24

約数和(自身を含む): 30252096

約数和(自身を除く): 9509205

約数列:

[1, 3, 13, 39, 163, 169, 251, 489, 507, 753, 2119, 3263, 6357, 9789, 27547, 40913, 42419, 82641, 122739, 127257, 531869, 1595607, 6914297, 20742891]

約数ペア:

[(1, 20742891), (3, 6914297), (13, 1595607), (39, 531869), (163, 127257), (169, 122739), (251, 82641), (489, 42419), (507, 40913), (753, 27547), (2119, 9789), (3263, 6357)]