19606640

素因数分解:

$2^4\times 5^1\times {\mathrm{245083}}^1$

素因数の和:245096

約数の個数: 20

約数和(自身を含む): 45585624

約数和(自身を除く): 25978984

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 245083, 490166, 980332, 1225415, 1960664, 2450830, 3921328, 4901660, 9803320, 19606640]

約数ペア:

[(1, 19606640), (2, 9803320), (4, 4901660), (5, 3921328), (8, 2450830), (10, 1960664), (16, 1225415), (20, 980332), (40, 490166), (80, 245083)]