20687675

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{449}}^1$

素因数の和:575

約数の個数: 24

約数和(自身を含む): 27342000

約数和(自身を除く): 6654325

約数列:

[1, 5, 19, 25, 95, 97, 449, 475, 485, 1843, 2245, 2425, 8531, 9215, 11225, 42655, 43553, 46075, 213275, 217765, 827507, 1088825, 4137535, 20687675]

約数ペア:

[(1, 20687675), (5, 4137535), (19, 1088825), (25, 827507), (95, 217765), (97, 213275), (449, 46075), (475, 43553), (485, 42655), (1843, 11225), (2245, 9215), (2425, 8531)]