491225

素因数分解:

$5^2\times 7^2\times {\mathrm{401}}^1$

素因数の和:425

約数の個数: 18

約数和(自身を含む): 710334

約数和(自身を除く): 219109

約数列:

[1, 5, 7, 25, 35, 49, 175, 245, 401, 1225, 2005, 2807, 10025, 14035, 19649, 70175, 98245, 491225]

約数ペア:

[(1, 491225), (5, 98245), (7, 70175), (25, 19649), (35, 14035), (49, 10025), (175, 2807), (245, 2005), (401, 1225)]