19937020

素因数分解:

$2^2\times 5^1\times {\mathrm{179}}^1\times {\mathrm{5569}}^1$

素因数の和:5757

約数の個数: 24

約数和(自身を含む): 42109200

約数和(自身を除く): 22172180

約数列:

[1, 2, 4, 5, 10, 20, 179, 358, 716, 895, 1790, 3580, 5569, 11138, 22276, 27845, 55690, 111380, 996851, 1993702, 3987404, 4984255, 9968510, 19937020]

約数ペア:

[(1, 19937020), (2, 9968510), (4, 4984255), (5, 3987404), (10, 1993702), (20, 996851), (179, 111380), (358, 55690), (716, 27845), (895, 22276), (1790, 11138), (3580, 5569)]