20637604

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{30529}}^1$

素因数の和:30559

約数の個数: 18

約数和(自身を含む): 39108930

約数和(自身を除く): 18471326

約数列:

[1, 2, 4, 13, 26, 52, 169, 338, 676, 30529, 61058, 122116, 396877, 793754, 1587508, 5159401, 10318802, 20637604]

約数ペア:

[(1, 20637604), (2, 10318802), (4, 5159401), (13, 1587508), (26, 793754), (52, 396877), (169, 122116), (338, 61058), (676, 30529)]