21125180

素因数分解:

$2^2\times 5^1\times {\mathrm{127}}^1\times {\mathrm{8317}}^1$

素因数の和:8453

約数の個数: 24

約数和(自身を含む): 44717568

約数和(自身を除く): 23592388

約数列:

[1, 2, 4, 5, 10, 20, 127, 254, 508, 635, 1270, 2540, 8317, 16634, 33268, 41585, 83170, 166340, 1056259, 2112518, 4225036, 5281295, 10562590, 21125180]

約数ペア:

[(1, 21125180), (2, 10562590), (4, 5281295), (5, 4225036), (10, 2112518), (20, 1056259), (127, 166340), (254, 83170), (508, 41585), (635, 33268), (1270, 16634), (2540, 8317)]