8640880

素因数分解:

$2^4\times 5^1\times {\mathrm{108011}}^1$

素因数の和:108024

約数の個数: 20

約数和(自身を含む): 20090232

約数和(自身を除く): 11449352

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 108011, 216022, 432044, 540055, 864088, 1080110, 1728176, 2160220, 4320440, 8640880]

約数ペア:

[(1, 8640880), (2, 4320440), (4, 2160220), (5, 1728176), (8, 1080110), (10, 864088), (16, 540055), (20, 432044), (40, 216022), (80, 108011)]