81045080

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{28537}}^1$

素因数の和:28619

約数の個数: 32

約数和(自身を含む): 184926240

約数和(自身を除く): 103881160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 28537, 57074, 114148, 142685, 228296, 285370, 570740, 1141480, 2026127, 4052254, 8104508, 10130635, 16209016, 20261270, 40522540, 81045080]

約数ペア:

[(1, 81045080), (2, 40522540), (4, 20261270), (5, 16209016), (8, 10130635), (10, 8104508), (20, 4052254), (40, 2026127), (71, 1141480), (142, 570740), (284, 285370), (355, 228296), (568, 142685), (710, 114148), (1420, 57074), (2840, 28537)]