12801560

素因数分解:

$2^3\times 5^1\times {\mathrm{320039}}^1$

素因数の和:320050

約数の個数: 16

約数和(自身を含む): 28803600

約数和(自身を除く): 16002040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 320039, 640078, 1280156, 1600195, 2560312, 3200390, 6400780, 12801560]

約数ペア:

[(1, 12801560), (2, 6400780), (4, 3200390), (5, 2560312), (8, 1600195), (10, 1280156), (20, 640078), (40, 320039)]