399685

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{43}}^1$

素因数の和:85

約数の個数: 24

約数和(自身を含む): 579744

約数和(自身を除く): 180059

約数列:

[1, 5, 11, 13, 43, 55, 65, 143, 169, 215, 473, 559, 715, 845, 1859, 2365, 2795, 6149, 7267, 9295, 30745, 36335, 79937, 399685]

約数ペア:

[(1, 399685), (5, 79937), (11, 36335), (13, 30745), (43, 9295), (55, 7267), (65, 6149), (143, 2795), (169, 2365), (215, 1859), (473, 845), (559, 715)]