21278998

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{5021}}^1$

素因数の和:5199

約数の個数: 16

約数和(自身を含む): 34591536

約数和(自身を除く): 13312538

約数列:

[1, 2, 13, 26, 163, 326, 2119, 4238, 5021, 10042, 65273, 130546, 818423, 1636846, 10639499, 21278998]

約数ペア:

[(1, 21278998), (2, 10639499), (13, 1636846), (26, 818423), (163, 130546), (326, 65273), (2119, 10042), (4238, 5021)]