28477780

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{34729}}^1$

素因数の和:34779

約数の個数: 24

約数和(自身を含む): 61263720

約数和(自身を除く): 32785940

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 34729, 69458, 138916, 173645, 347290, 694580, 1423889, 2847778, 5695556, 7119445, 14238890, 28477780]

約数ペア:

[(1, 28477780), (2, 14238890), (4, 7119445), (5, 5695556), (10, 2847778), (20, 1423889), (41, 694580), (82, 347290), (164, 173645), (205, 138916), (410, 69458), (820, 34729)]