20127965

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{28151}}^1$

素因数の和:28180

約数の個数: 16

約数和(自身を含む): 28377216

約数和(自身を除く): 8249251

約数列:

[1, 5, 11, 13, 55, 65, 143, 715, 28151, 140755, 309661, 365963, 1548305, 1829815, 4025593, 20127965]

約数ペア:

[(1, 20127965), (5, 4025593), (11, 1829815), (13, 1548305), (55, 365963), (65, 309661), (143, 140755), (715, 28151)]