65687740

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{80107}}^1$

素因数の和:80157

約数の個数: 24

約数和(自身を含む): 141310512

約数和(自身を除く): 75622772

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 80107, 160214, 320428, 400535, 801070, 1602140, 3284387, 6568774, 13137548, 16421935, 32843870, 65687740]

約数ペア:

[(1, 65687740), (2, 32843870), (4, 16421935), (5, 13137548), (10, 6568774), (20, 3284387), (41, 1602140), (82, 801070), (164, 400535), (205, 320428), (410, 160214), (820, 80107)]