81825880

素因数分解:

$2^3\times 5^1\times {\mathrm{2045647}}^1$

素因数の和:2045658

約数の個数: 16

約数和(自身を含む): 184108320

約数和(自身を除く): 102282440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2045647, 4091294, 8182588, 10228235, 16365176, 20456470, 40912940, 81825880]

約数ペア:

[(1, 81825880), (2, 40912940), (4, 20456470), (5, 16365176), (8, 10228235), (10, 8182588), (20, 4091294), (40, 2045647)]