28811560

素因数分解:

$2^3\times 5^1\times {\mathrm{720289}}^1$

素因数の和:720300

約数の個数: 16

約数和(自身を含む): 64826100

約数和(自身を除く): 36014540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 720289, 1440578, 2881156, 3601445, 5762312, 7202890, 14405780, 28811560]

約数ペア:

[(1, 28811560), (2, 14405780), (4, 7202890), (5, 5762312), (8, 3601445), (10, 2881156), (20, 1440578), (40, 720289)]