28812760

素因数分解:

$2^3\times 5^1\times {\mathrm{720319}}^1$

素因数の和:720330

約数の個数: 16

約数和(自身を含む): 64828800

約数和(自身を除く): 36016040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 720319, 1440638, 2881276, 3601595, 5762552, 7203190, 14406380, 28812760]

約数ペア:

[(1, 28812760), (2, 14406380), (4, 7203190), (5, 5762552), (8, 3601595), (10, 2881276), (20, 1440638), (40, 720319)]