21898628

素因数分解:

$2^2\times {\mathrm{89}}^1\times {\mathrm{137}}^1\times {\mathrm{449}}^1$

素因数の和:679

約数の個数: 24

約数和(自身を含む): 39123000

約数和(自身を除く): 17224372

約数列:

[1, 2, 4, 89, 137, 178, 274, 356, 449, 548, 898, 1796, 12193, 24386, 39961, 48772, 61513, 79922, 123026, 159844, 246052, 5474657, 10949314, 21898628]

約数ペア:

[(1, 21898628), (2, 10949314), (4, 5474657), (89, 246052), (137, 159844), (178, 123026), (274, 79922), (356, 61513), (449, 48772), (548, 39961), (898, 24386), (1796, 12193)]