18540820

素因数分解:

$2^2\times 5^1\times {\mathrm{179}}^1\times {\mathrm{5179}}^1$

素因数の和:5367

約数の個数: 24

約数和(自身を含む): 39160800

約数和(自身を除く): 20619980

約数列:

[1, 2, 4, 5, 10, 20, 179, 358, 716, 895, 1790, 3580, 5179, 10358, 20716, 25895, 51790, 103580, 927041, 1854082, 3708164, 4635205, 9270410, 18540820]

約数ペア:

[(1, 18540820), (2, 9270410), (4, 4635205), (5, 3708164), (10, 1854082), (20, 927041), (179, 103580), (358, 51790), (716, 25895), (895, 20716), (1790, 10358), (3580, 5179)]