20375990

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{65729}}^1$

素因数の和:65767

約数の個数: 16

約数和(自身を含む): 37860480

約数和(自身を除く): 17484490

約数列:

[1, 2, 5, 10, 31, 62, 155, 310, 65729, 131458, 328645, 657290, 2037599, 4075198, 10187995, 20375990]

約数ペア:

[(1, 20375990), (2, 10187995), (5, 4075198), (10, 2037599), (31, 657290), (62, 328645), (155, 131458), (310, 65729)]