28477640

素因数分解:

$2^3\times 5^1\times {\mathrm{263}}^1\times {\mathrm{2707}}^1$

素因数の和:2981

約数の個数: 32

約数和(自身を含む): 64342080

約数和(自身を除く): 35864440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 263, 526, 1052, 1315, 2104, 2630, 2707, 5260, 5414, 10520, 10828, 13535, 21656, 27070, 54140, 108280, 711941, 1423882, 2847764, 3559705, 5695528, 7119410, 14238820, 28477640]

約数ペア:

[(1, 28477640), (2, 14238820), (4, 7119410), (5, 5695528), (8, 3559705), (10, 2847764), (20, 1423882), (40, 711941), (263, 108280), (526, 54140), (1052, 27070), (1315, 21656), (2104, 13535), (2630, 10828), (2707, 10520), (5260, 5414)]