20158540

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{10391}}^1$

素因数の和:10497

約数の個数: 24

約数和(自身を含む): 42773472

約数和(自身を除く): 22614932

約数列:

[1, 2, 4, 5, 10, 20, 97, 194, 388, 485, 970, 1940, 10391, 20782, 41564, 51955, 103910, 207820, 1007927, 2015854, 4031708, 5039635, 10079270, 20158540]

約数ペア:

[(1, 20158540), (2, 10079270), (4, 5039635), (5, 4031708), (10, 2015854), (20, 1007927), (97, 207820), (194, 103910), (388, 51955), (485, 41564), (970, 20782), (1940, 10391)]