21276265

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{10883}}^1$

素因数の和:10928

約数の個数: 16

約数和(自身を含む): 28211328

約数和(自身を除く): 6935063

約数列:

[1, 5, 17, 23, 85, 115, 391, 1955, 10883, 54415, 185011, 250309, 925055, 1251545, 4255253, 21276265]

約数ペア:

[(1, 21276265), (5, 4255253), (17, 1251545), (23, 925055), (85, 250309), (115, 185011), (391, 54415), (1955, 10883)]