15552220

素因数分解:

$2^2\times 5^1\times {\mathrm{389}}^1\times {\mathrm{1999}}^1$

素因数の和:2397

約数の個数: 24

約数和(自身を含む): 32760000

約数和(自身を除く): 17207780

約数列:

[1, 2, 4, 5, 10, 20, 389, 778, 1556, 1945, 1999, 3890, 3998, 7780, 7996, 9995, 19990, 39980, 777611, 1555222, 3110444, 3888055, 7776110, 15552220]

約数ペア:

[(1, 15552220), (2, 7776110), (4, 3888055), (5, 3110444), (10, 1555222), (20, 777611), (389, 39980), (778, 19990), (1556, 9995), (1945, 7996), (1999, 7780), (3890, 3998)]