305020

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{151}}^1$

素因数の和:261

約数の個数: 24

約数和(自身を含む): 651168

約数和(自身を除く): 346148

約数列:

[1, 2, 4, 5, 10, 20, 101, 151, 202, 302, 404, 505, 604, 755, 1010, 1510, 2020, 3020, 15251, 30502, 61004, 76255, 152510, 305020]

約数ペア:

[(1, 305020), (2, 152510), (4, 76255), (5, 61004), (10, 30502), (20, 15251), (101, 3020), (151, 2020), (202, 1510), (302, 1010), (404, 755), (505, 604)]