21956207

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{6521}}^1$

素因数の和:6578

約数の個数: 16

約数和(自身を含む): 27757632

約数和(自身を除く): 5801425

約数列:

[1, 7, 13, 37, 91, 259, 481, 3367, 6521, 45647, 84773, 241277, 593411, 1688939, 3136601, 21956207]

約数ペア:

[(1, 21956207), (7, 3136601), (13, 1688939), (37, 593411), (91, 241277), (259, 84773), (481, 45647), (3367, 6521)]