64971080

素因数分解:

$2^3\times 5^1\times {\mathrm{1624277}}^1$

素因数の和:1624288

約数の個数: 16

約数和(自身を含む): 146185020

約数和(自身を除く): 81213940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1624277, 3248554, 6497108, 8121385, 12994216, 16242770, 32485540, 64971080]

約数ペア:

[(1, 64971080), (2, 32485540), (4, 16242770), (5, 12994216), (8, 8121385), (10, 6497108), (20, 3248554), (40, 1624277)]