180645880

素因数分解:

$2^3\times 5^1\times {\mathrm{1051}}^1\times {\mathrm{4297}}^1$

素因数の和:5359

約数の個数: 32

約数和(自身を含む): 406934640

約数和(自身を除く): 226288760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1051, 2102, 4204, 4297, 5255, 8408, 8594, 10510, 17188, 21020, 21485, 34376, 42040, 42970, 85940, 171880, 4516147, 9032294, 18064588, 22580735, 36129176, 45161470, 90322940, 180645880]

約数ペア:

[(1, 180645880), (2, 90322940), (4, 45161470), (5, 36129176), (8, 22580735), (10, 18064588), (20, 9032294), (40, 4516147), (1051, 171880), (2102, 85940), (4204, 42970), (4297, 42040), (5255, 34376), (8408, 21485), (8594, 21020), (10510, 17188)]