81266620

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{40231}}^1$

素因数の和:40341

約数の個数: 24

約数和(自身を含む): 172353888

約数和(自身を除く): 91087268

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 2020, 40231, 80462, 160924, 201155, 402310, 804620, 4063331, 8126662, 16253324, 20316655, 40633310, 81266620]

約数ペア:

[(1, 81266620), (2, 40633310), (4, 20316655), (5, 16253324), (10, 8126662), (20, 4063331), (101, 804620), (202, 402310), (404, 201155), (505, 160924), (1010, 80462), (2020, 40231)]