81021031

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{631}}^1$

素因数の和:751

約数の個数: 32

約数和(自身を含む): 107025408

約数和(自身を除く): 26004377

約数列:

[1, 7, 13, 17, 83, 91, 119, 221, 581, 631, 1079, 1411, 1547, 4417, 7553, 8203, 9877, 10727, 18343, 52373, 57421, 75089, 128401, 139451, 366611, 680849, 890341, 976157, 4765943, 6232387, 11574433, 81021031]

約数ペア:

[(1, 81021031), (7, 11574433), (13, 6232387), (17, 4765943), (83, 976157), (91, 890341), (119, 680849), (221, 366611), (581, 139451), (631, 128401), (1079, 75089), (1411, 57421), (1547, 52373), (4417, 18343), (7553, 10727), (8203, 9877)]