64812080

素因数分解:

$2^4\times 5^1\times {\mathrm{810151}}^1$

素因数の和:810164

約数の個数: 20

約数和(自身を含む): 150688272

約数和(自身を除く): 85876192

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 810151, 1620302, 3240604, 4050755, 6481208, 8101510, 12962416, 16203020, 32406040, 64812080]

約数ペア:

[(1, 64812080), (2, 32406040), (4, 16203020), (5, 12962416), (8, 8101510), (10, 6481208), (16, 4050755), (20, 3240604), (40, 1620302), (80, 810151)]