201800020

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{99901}}^1$

素因数の和:100011

約数の個数: 24

約数和(自身を含む): 427980168

約数和(自身を除く): 226180148

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 2020, 99901, 199802, 399604, 499505, 999010, 1998020, 10090001, 20180002, 40360004, 50450005, 100900010, 201800020]

約数ペア:

[(1, 201800020), (2, 100900010), (4, 50450005), (5, 40360004), (10, 20180002), (20, 10090001), (101, 1998020), (202, 999010), (404, 499505), (505, 399604), (1010, 199802), (2020, 99901)]