19696720

素因数分解:

$2^4\times 5^1\times {\mathrm{246209}}^1$

素因数の和:246222

約数の個数: 20

約数和(自身を含む): 45795060

約数和(自身を除く): 26098340

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 246209, 492418, 984836, 1231045, 1969672, 2462090, 3939344, 4924180, 9848360, 19696720]

約数ペア:

[(1, 19696720), (2, 9848360), (4, 4924180), (5, 3939344), (8, 2462090), (10, 1969672), (16, 1231045), (20, 984836), (40, 492418), (80, 246209)]