21439960

素因数分解:

$2^3\times 5^1\times {\mathrm{535999}}^1$

素因数の和:536010

約数の個数: 16

約数和(自身を含む): 48240000

約数和(自身を除く): 26800040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 535999, 1071998, 2143996, 2679995, 4287992, 5359990, 10719980, 21439960]

約数ペア:

[(1, 21439960), (2, 10719980), (4, 5359990), (5, 4287992), (8, 2679995), (10, 2143996), (20, 1071998), (40, 535999)]