21515020

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{10651}}^1$

素因数の和:10761

約数の個数: 24

約数和(自身を含む): 45633168

約数和(自身を除く): 24118148

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 2020, 10651, 21302, 42604, 53255, 106510, 213020, 1075751, 2151502, 4303004, 5378755, 10757510, 21515020]

約数ペア:

[(1, 21515020), (2, 10757510), (4, 5378755), (5, 4303004), (10, 2151502), (20, 1075751), (101, 213020), (202, 106510), (404, 53255), (505, 42604), (1010, 21302), (2020, 10651)]