21919960

素因数分解:

$2^3\times 5^1\times {\mathrm{547999}}^1$

素因数の和:548010

約数の個数: 16

約数和(自身を含む): 49320000

約数和(自身を除く): 27400040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 547999, 1095998, 2191996, 2739995, 4383992, 5479990, 10959980, 21919960]

約数ペア:

[(1, 21919960), (2, 10959980), (4, 5479990), (5, 4383992), (8, 2739995), (10, 2191996), (20, 1095998), (40, 547999)]