20329220

素因数分解:

$2^2\times 5^1\times {\mathrm{691}}^1\times {\mathrm{1471}}^1$

素因数の和:2171

約数の個数: 24

約数和(自身を含む): 42782208

約数和(自身を除く): 22452988

約数列:

[1, 2, 4, 5, 10, 20, 691, 1382, 1471, 2764, 2942, 3455, 5884, 6910, 7355, 13820, 14710, 29420, 1016461, 2032922, 4065844, 5082305, 10164610, 20329220]

約数ペア:

[(1, 20329220), (2, 10164610), (4, 5082305), (5, 4065844), (10, 2032922), (20, 1016461), (691, 29420), (1382, 14710), (1471, 13820), (2764, 7355), (2942, 6910), (3455, 5884)]