20158957

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{157}}^1$

素因数の和:277

約数の個数: 32

約数和(自身を含む): 26756352

約数和(自身を除く): 6597395

約数列:

[1, 7, 13, 17, 83, 91, 119, 157, 221, 581, 1079, 1099, 1411, 1547, 2041, 2669, 7553, 9877, 13031, 14287, 18343, 18683, 34697, 91217, 128401, 169403, 221527, 242879, 1185821, 1550689, 2879851, 20158957]

約数ペア:

[(1, 20158957), (7, 2879851), (13, 1550689), (17, 1185821), (83, 242879), (91, 221527), (119, 169403), (157, 128401), (221, 91217), (581, 34697), (1079, 18683), (1099, 18343), (1411, 14287), (1547, 13031), (2041, 9877), (2669, 7553)]