521020

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{239}}^1$

素因数の和:357

約数の個数: 24

約数和(自身を含む): 1108800

約数和(自身を除く): 587780

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 239, 436, 478, 545, 956, 1090, 1195, 2180, 2390, 4780, 26051, 52102, 104204, 130255, 260510, 521020]

約数ペア:

[(1, 521020), (2, 260510), (4, 130255), (5, 104204), (10, 52102), (20, 26051), (109, 4780), (218, 2390), (239, 2180), (436, 1195), (478, 1090), (545, 956)]