16891615

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{151}}^1\times {\mathrm{1721}}^1$

素因数の和:1890

約数の個数: 16

約数和(自身を含む): 21986496

約数和(自身を除く): 5094881

約数列:

[1, 5, 13, 65, 151, 755, 1721, 1963, 8605, 9815, 22373, 111865, 259871, 1299355, 3378323, 16891615]

約数ペア:

[(1, 16891615), (5, 3378323), (13, 1299355), (65, 259871), (151, 111865), (755, 22373), (1721, 9815), (1963, 8605)]