80180440

素因数分解:

$2^3\times 5^1\times {\mathrm{2004511}}^1$

素因数の和:2004522

約数の個数: 16

約数和(自身を含む): 180406080

約数和(自身を除く): 100225640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2004511, 4009022, 8018044, 10022555, 16036088, 20045110, 40090220, 80180440]

約数ペア:

[(1, 80180440), (2, 40090220), (4, 20045110), (5, 16036088), (8, 10022555), (10, 8018044), (20, 4009022), (40, 2004511)]