18711305

素因数分解:

$5^1\times {\mathrm{17}}^2\times {\mathrm{23}}^1\times {\mathrm{563}}^1$

素因数の和:625

約数の個数: 24

約数和(自身を含む): 24933312

約数和(自身を除く): 6222007

約数列:

[1, 5, 17, 23, 85, 115, 289, 391, 563, 1445, 1955, 2815, 6647, 9571, 12949, 33235, 47855, 64745, 162707, 220133, 813535, 1100665, 3742261, 18711305]

約数ペア:

[(1, 18711305), (5, 3742261), (17, 1100665), (23, 813535), (85, 220133), (115, 162707), (289, 64745), (391, 47855), (563, 33235), (1445, 12949), (1955, 9571), (2815, 6647)]