123020020

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{60901}}^1$

素因数の和:61011

約数の個数: 24

約数和(自身を含む): 260904168

約数和(自身を除く): 137884148

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 2020, 60901, 121802, 243604, 304505, 609010, 1218020, 6151001, 12302002, 24604004, 30755005, 61510010, 123020020]

約数ペア:

[(1, 123020020), (2, 61510010), (4, 30755005), (5, 24604004), (10, 12302002), (20, 6151001), (101, 1218020), (202, 609010), (404, 304505), (505, 243604), (1010, 121802), (2020, 60901)]