15625520

素因数分解:

$2^4\times 5^1\times {\mathrm{195319}}^1$

素因数の和:195332

約数の個数: 20

約数和(自身を含む): 36329520

約数和(自身を除く): 20704000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 195319, 390638, 781276, 976595, 1562552, 1953190, 3125104, 3906380, 7812760, 15625520]

約数ペア:

[(1, 15625520), (2, 7812760), (4, 3906380), (5, 3125104), (8, 1953190), (10, 1562552), (16, 976595), (20, 781276), (40, 390638), (80, 195319)]