21250359

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{6263}}^1$

素因数の和:6311

約数の個数: 24

約数和(自身を含む): 34201440

約数和(自身を除く): 12951081

約数列:

[1, 3, 9, 13, 29, 39, 87, 117, 261, 377, 1131, 3393, 6263, 18789, 56367, 81419, 181627, 244257, 544881, 732771, 1634643, 2361151, 7083453, 21250359]

約数ペア:

[(1, 21250359), (3, 7083453), (9, 2361151), (13, 1634643), (29, 732771), (39, 544881), (87, 244257), (117, 181627), (261, 81419), (377, 56367), (1131, 18789), (3393, 6263)]