19478780

素因数分解:

$2^2\times 5^1\times {\mathrm{179}}^1\times {\mathrm{5441}}^1$

素因数の和:5629

約数の個数: 24

約数和(自身を含む): 41141520

約数和(自身を除く): 21662740

約数列:

[1, 2, 4, 5, 10, 20, 179, 358, 716, 895, 1790, 3580, 5441, 10882, 21764, 27205, 54410, 108820, 973939, 1947878, 3895756, 4869695, 9739390, 19478780]

約数ペア:

[(1, 19478780), (2, 9739390), (4, 4869695), (5, 3895756), (10, 1947878), (20, 973939), (179, 108820), (358, 54410), (716, 27205), (895, 21764), (1790, 10882), (3580, 5441)]