20181961040

素因数分解:

$2^4\times 5^1\times {\mathrm{252274513}}^1$

素因数の和:252274526

約数の個数: 20

約数和(自身を含む): 46923059604

約数和(自身を除く): 26741098564

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 252274513, 504549026, 1009098052, 1261372565, 2018196104, 2522745130, 4036392208, 5045490260, 10090980520, 20181961040]

約数ペア:

[(1, 20181961040), (2, 10090980520), (4, 5045490260), (5, 4036392208), (8, 2522745130), (10, 2018196104), (16, 1261372565), (20, 1009098052), (40, 504549026), (80, 252274513)]