64402960

素因数分解:

$2^4\times 5^1\times {\mathrm{805037}}^1$

素因数の和:805050

約数の個数: 20

約数和(自身を含む): 149737068

約数和(自身を除く): 85334108

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 805037, 1610074, 3220148, 4025185, 6440296, 8050370, 12880592, 16100740, 32201480, 64402960]

約数ペア:

[(1, 64402960), (2, 32201480), (4, 16100740), (5, 12880592), (8, 8050370), (10, 6440296), (16, 4025185), (20, 3220148), (40, 1610074), (80, 805037)]