129625520

素因数分解:

$2^4\times 5^1\times {\mathrm{1620319}}^1$

素因数の和:1620332

約数の個数: 20

約数和(自身を含む): 301379520

約数和(自身を除く): 171754000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1620319, 3240638, 6481276, 8101595, 12962552, 16203190, 25925104, 32406380, 64812760, 129625520]

約数ペア:

[(1, 129625520), (2, 64812760), (4, 32406380), (5, 25925104), (8, 16203190), (10, 12962552), (16, 8101595), (20, 6481276), (40, 3240638), (80, 1620319)]