19947020

素因数分解:

$2^2\times 5^1\times {\mathrm{613}}^1\times {\mathrm{1627}}^1$

素因数の和:2249

約数の個数: 24

約数和(自身を含む): 41982864

約数和(自身を除く): 22035844

約数列:

[1, 2, 4, 5, 10, 20, 613, 1226, 1627, 2452, 3065, 3254, 6130, 6508, 8135, 12260, 16270, 32540, 997351, 1994702, 3989404, 4986755, 9973510, 19947020]

約数ペア:

[(1, 19947020), (2, 9973510), (4, 4986755), (5, 3989404), (10, 1994702), (20, 997351), (613, 32540), (1226, 16270), (1627, 12260), (2452, 8135), (3065, 6508), (3254, 6130)]