281034380

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{1277429}}^1$

素因数の和:1277449

約数の個数: 24

約数和(自身を含む): 643824720

約数和(自身を除く): 362790340

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 1277429, 2554858, 5109716, 6387145, 12774290, 14051719, 25548580, 28103438, 56206876, 70258595, 140517190, 281034380]

約数ペア:

[(1, 281034380), (2, 140517190), (4, 70258595), (5, 56206876), (10, 28103438), (11, 25548580), (20, 14051719), (22, 12774290), (44, 6387145), (55, 5109716), (110, 2554858), (220, 1277429)]