19838120

素因数分解:

$2^3\times 5^1\times {\mathrm{495953}}^1$

素因数の和:495964

約数の個数: 16

約数和(自身を含む): 44635860

約数和(自身を除く): 24797740

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 495953, 991906, 1983812, 2479765, 3967624, 4959530, 9919060, 19838120]

約数ペア:

[(1, 19838120), (2, 9919060), (4, 4959530), (5, 3967624), (8, 2479765), (10, 1983812), (20, 991906), (40, 495953)]