20799925

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{449}}^1$

素因数の和:585

約数の個数: 24

約数和(自身を含む): 27621000

約数和(自身を除く): 6821075

約数列:

[1, 5, 17, 25, 85, 109, 425, 449, 545, 1853, 2245, 2725, 7633, 9265, 11225, 38165, 46325, 48941, 190825, 244705, 831997, 1223525, 4159985, 20799925]

約数ペア:

[(1, 20799925), (5, 4159985), (17, 1223525), (25, 831997), (85, 244705), (109, 190825), (425, 48941), (449, 46325), (545, 38165), (1853, 11225), (2245, 9265), (2725, 7633)]