21768245

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{3607}}^1$

素因数の和:3700

約数の個数: 16

約数和(自身を含む): 28055808

約数和(自身を除く): 6287563

約数列:

[1, 5, 17, 71, 85, 355, 1207, 3607, 6035, 18035, 61319, 256097, 306595, 1280485, 4353649, 21768245]

約数ペア:

[(1, 21768245), (5, 4353649), (17, 1280485), (71, 306595), (85, 256097), (355, 61319), (1207, 18035), (3607, 6035)]