20078857790

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{64770509}}^1$

素因数の和:64770547

約数の個数: 16

約数和(自身を含む): 37307813760

約数和(自身を除く): 17228955970

約数列:

[1, 2, 5, 10, 31, 62, 155, 310, 64770509, 129541018, 323852545, 647705090, 2007885779, 4015771558, 10039428895, 20078857790]

約数ペア:

[(1, 20078857790), (2, 10039428895), (5, 4015771558), (10, 2007885779), (31, 647705090), (62, 323852545), (155, 129541018), (310, 64770509)]