205177540

素因数分解:

$2^2\times 5^1\times {\mathrm{397}}^1\times {\mathrm{25841}}^1$

素因数の和:26247

約数の個数: 24

約数和(自身を含む): 431974872

約数和(自身を除く): 226797332

約数列:

[1, 2, 4, 5, 10, 20, 397, 794, 1588, 1985, 3970, 7940, 25841, 51682, 103364, 129205, 258410, 516820, 10258877, 20517754, 41035508, 51294385, 102588770, 205177540]

約数ペア:

[(1, 205177540), (2, 102588770), (4, 51294385), (5, 41035508), (10, 20517754), (20, 10258877), (397, 516820), (794, 258410), (1588, 129205), (1985, 103364), (3970, 51682), (7940, 25841)]