19580020

素因数分解:

$2^2\times 5^1\times {\mathrm{979001}}^1$

素因数の和:979010

約数の個数: 12

約数和(自身を含む): 41118084

約数和(自身を除く): 21538064

約数列:

[1, 2, 4, 5, 10, 20, 979001, 1958002, 3916004, 4895005, 9790010, 19580020]

約数ペア:

[(1, 19580020), (2, 9790010), (4, 4895005), (5, 3916004), (10, 1958002), (20, 979001)]