81252760

素因数分解:

$2^3\times 5^1\times {\mathrm{2031319}}^1$

素因数の和:2031330

約数の個数: 16

約数和(自身を含む): 182818800

約数和(自身を除く): 101566040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2031319, 4062638, 8125276, 10156595, 16250552, 20313190, 40626380, 81252760]

約数ペア:

[(1, 81252760), (2, 40626380), (4, 20313190), (5, 16250552), (8, 10156595), (10, 8125276), (20, 4062638), (40, 2031319)]