15916240

素因数分解:

$2^4\times 5^1\times {\mathrm{198953}}^1$

素因数の和:198966

約数の個数: 20

約数和(自身を含む): 37005444

約数和(自身を除く): 21089204

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 198953, 397906, 795812, 994765, 1591624, 1989530, 3183248, 3979060, 7958120, 15916240]

約数ペア:

[(1, 15916240), (2, 7958120), (4, 3979060), (5, 3183248), (8, 1989530), (10, 1591624), (16, 994765), (20, 795812), (40, 397906), (80, 198953)]