18726980

素因数分解:

$2^2\times 5^1\times {\mathrm{179}}^1\times {\mathrm{5231}}^1$

素因数の和:5419

約数の個数: 24

約数和(自身を含む): 39553920

約数和(自身を除く): 20826940

約数列:

[1, 2, 4, 5, 10, 20, 179, 358, 716, 895, 1790, 3580, 5231, 10462, 20924, 26155, 52310, 104620, 936349, 1872698, 3745396, 4681745, 9363490, 18726980]

約数ペア:

[(1, 18726980), (2, 9363490), (4, 4681745), (5, 3745396), (10, 1872698), (20, 936349), (179, 104620), (358, 52310), (716, 26155), (895, 20924), (1790, 10462), (3580, 5231)]