28218421

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{12637}}^1$

素因数の和:12684

約数の個数: 16

約数和(自身を含む): 36397440

約数和(自身を除く): 8179019

約数列:

[1, 7, 11, 29, 77, 203, 319, 2233, 12637, 88459, 139007, 366473, 973049, 2565311, 4031203, 28218421]

約数ペア:

[(1, 28218421), (7, 4031203), (11, 2565311), (29, 973049), (77, 366473), (203, 139007), (319, 88459), (2233, 12637)]