21848309

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{2693}}^1$

素因数の和:2780

約数の個数: 16

約数和(自身を含む): 26724480

約数和(自身を除く): 4876171

約数列:

[1, 7, 19, 61, 133, 427, 1159, 2693, 8113, 18851, 51167, 164273, 358169, 1149911, 3121187, 21848309]

約数ペア:

[(1, 21848309), (7, 3121187), (19, 1149911), (61, 358169), (133, 164273), (427, 51167), (1159, 18851), (2693, 8113)]