81227785

素因数分解:

$5^1\times {\mathrm{17}}^2\times {\mathrm{67}}^1\times {\mathrm{839}}^1$

素因数の和:945

約数の個数: 24

約数和(自身を含む): 105215040

約数和(自身を除く): 23987255

約数列:

[1, 5, 17, 67, 85, 289, 335, 839, 1139, 1445, 4195, 5695, 14263, 19363, 56213, 71315, 96815, 242471, 281065, 955621, 1212355, 4778105, 16245557, 81227785]

約数ペア:

[(1, 81227785), (5, 16245557), (17, 4778105), (67, 1212355), (85, 955621), (289, 281065), (335, 242471), (839, 96815), (1139, 71315), (1445, 56213), (4195, 19363), (5695, 14263)]