21460816

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{103177}}^1$

素因数の和:103198

約数の個数: 20

約数和(自身を含む): 44779252

約数和(自身を除く): 23318436

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 103177, 206354, 412708, 825416, 1341301, 1650832, 2682602, 5365204, 10730408, 21460816]

約数ペア:

[(1, 21460816), (2, 10730408), (4, 5365204), (8, 2682602), (13, 1650832), (16, 1341301), (26, 825416), (52, 412708), (104, 206354), (208, 103177)]