281265820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{1278481}}^1$

素因数の和:1278501

約数の個数: 24

約数和(自身を含む): 644354928

約数和(自身を除く): 363089108

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 1278481, 2556962, 5113924, 6392405, 12784810, 14063291, 25569620, 28126582, 56253164, 70316455, 140632910, 281265820]

約数ペア:

[(1, 281265820), (2, 140632910), (4, 70316455), (5, 56253164), (10, 28126582), (11, 25569620), (20, 14063291), (22, 12784810), (44, 6392405), (55, 5113924), (110, 2556962), (220, 1278481)]