161008420

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{259691}}^1$

素因数の和:259731

約数の個数: 24

約数和(自身を含む): 349026048

約数和(自身を除く): 188017628

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 259691, 519382, 1038764, 1298455, 2596910, 5193820, 8050421, 16100842, 32201684, 40252105, 80504210, 161008420]

約数ペア:

[(1, 161008420), (2, 80504210), (4, 40252105), (5, 32201684), (10, 16100842), (20, 8050421), (31, 5193820), (62, 2596910), (124, 1298455), (155, 1038764), (310, 519382), (620, 259691)]