18741709

素因数分解:

$7^1\times {\mathrm{67}}^1\times {\mathrm{89}}^1\times {\mathrm{449}}^1$

素因数の和:612

約数の個数: 16

約数和(自身を含む): 22032000

約数和(自身を除く): 3290291

約数列:

[1, 7, 67, 89, 449, 469, 623, 3143, 5963, 30083, 39961, 41741, 210581, 279727, 2677387, 18741709]

約数ペア:

[(1, 18741709), (7, 2677387), (67, 279727), (89, 210581), (449, 41741), (469, 39961), (623, 30083), (3143, 5963)]