19975813

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{857}}^1$

素因数の和:1044

約数の個数: 16

約数和(自身を含む): 23639616

約数和(自身を除く): 3663803

約数列:

[1, 11, 13, 143, 163, 857, 1793, 2119, 9427, 11141, 23309, 122551, 139691, 1536601, 1815983, 19975813]

約数ペア:

[(1, 19975813), (11, 1815983), (13, 1536601), (143, 139691), (163, 122551), (857, 23309), (1793, 11141), (2119, 9427)]