400257

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{311}}^1$

素因数の和:341

約数の個数: 24

約数和(自身を含む): 681408

約数和(自身を除く): 281151

約数列:

[1, 3, 9, 11, 13, 33, 39, 99, 117, 143, 311, 429, 933, 1287, 2799, 3421, 4043, 10263, 12129, 30789, 36387, 44473, 133419, 400257]

約数ペア:

[(1, 400257), (3, 133419), (9, 44473), (11, 36387), (13, 30789), (33, 12129), (39, 10263), (99, 4043), (117, 3421), (143, 2799), (311, 1287), (429, 933)]