21905111

素因数分解:

${\mathrm{41}}^2\times {\mathrm{83}}^1\times {\mathrm{157}}^1$

素因数の和:322

約数の個数: 12

約数和(自身を含む): 22867656

約数和(自身を除く): 962545

約数列:

[1, 41, 83, 157, 1681, 3403, 6437, 13031, 139523, 263917, 534271, 21905111]

約数ペア:

[(1, 21905111), (41, 534271), (83, 263917), (157, 139523), (1681, 13031), (3403, 6437)]