20478557

素因数分解:

${\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{2671}}^1$

素因数の和:2740

約数の個数: 16

約数和(自身を含む): 24240384

約数和(自身を除く): 3761827

約数列:

[1, 11, 17, 41, 187, 451, 697, 2671, 7667, 29381, 45407, 109511, 499477, 1204621, 1861687, 20478557]

約数ペア:

[(1, 20478557), (11, 1861687), (17, 1204621), (41, 499477), (187, 109511), (451, 45407), (697, 29381), (2671, 7667)]