28786220

素因数分解:

$2^2\times 5^1\times {\mathrm{631}}^1\times {\mathrm{2281}}^1$

素因数の和:2921

約数の個数: 24

約数和(自身を含む): 60573408

約数和(自身を除く): 31787188

約数列:

[1, 2, 4, 5, 10, 20, 631, 1262, 2281, 2524, 3155, 4562, 6310, 9124, 11405, 12620, 22810, 45620, 1439311, 2878622, 5757244, 7196555, 14393110, 28786220]

約数ペア:

[(1, 28786220), (2, 14393110), (4, 7196555), (5, 5757244), (10, 2878622), (20, 1439311), (631, 45620), (1262, 22810), (2281, 12620), (2524, 11405), (3155, 9124), (4562, 6310)]