19515580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{139397}}^1$

素因数の和:139413

約数の個数: 24

約数和(自身を含む): 46837728

約数和(自身を除く): 27322148

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 139397, 278794, 557588, 696985, 975779, 1393970, 1951558, 2787940, 3903116, 4878895, 9757790, 19515580]

約数ペア:

[(1, 19515580), (2, 9757790), (4, 4878895), (5, 3903116), (7, 2787940), (10, 1951558), (14, 1393970), (20, 975779), (28, 696985), (35, 557588), (70, 278794), (140, 139397)]