21219874

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{10331}}^1$

素因数の和:10425

約数の個数: 16

約数和(自身を含む): 34715520

約数和(自身を除く): 13495646

約数列:

[1, 2, 13, 26, 79, 158, 1027, 2054, 10331, 20662, 134303, 268606, 816149, 1632298, 10609937, 21219874]

約数ペア:

[(1, 21219874), (2, 10609937), (13, 1632298), (26, 816149), (79, 268606), (158, 134303), (1027, 20662), (2054, 10331)]