19368680

素因数分解:

$2^3\times 5^1\times {\mathrm{439}}^1\times {\mathrm{1103}}^1$

素因数の和:1553

約数の個数: 32

約数和(自身を含む): 43718400

約数和(自身を除く): 24349720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 439, 878, 1103, 1756, 2195, 2206, 3512, 4390, 4412, 5515, 8780, 8824, 11030, 17560, 22060, 44120, 484217, 968434, 1936868, 2421085, 3873736, 4842170, 9684340, 19368680]

約数ペア:

[(1, 19368680), (2, 9684340), (4, 4842170), (5, 3873736), (8, 2421085), (10, 1936868), (20, 968434), (40, 484217), (439, 44120), (878, 22060), (1103, 17560), (1756, 11030), (2195, 8824), (2206, 8780), (3512, 5515), (4390, 4412)]