21379980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{356333}}^1$

素因数の和:356345

約数の個数: 24

約数和(自身を含む): 59864112

約数和(自身を除く): 38484132

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 356333, 712666, 1068999, 1425332, 1781665, 2137998, 3563330, 4275996, 5344995, 7126660, 10689990, 21379980]

約数ペア:

[(1, 21379980), (2, 10689990), (3, 7126660), (4, 5344995), (5, 4275996), (6, 3563330), (10, 2137998), (12, 1781665), (15, 1425332), (20, 1068999), (30, 712666), (60, 356333)]