19812180

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{330203}}^1$

素因数の和:330215

約数の個数: 24

約数和(自身を含む): 55474272

約数和(自身を除く): 35662092

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 330203, 660406, 990609, 1320812, 1651015, 1981218, 3302030, 3962436, 4953045, 6604060, 9906090, 19812180]

約数ペア:

[(1, 19812180), (2, 9906090), (3, 6604060), (4, 4953045), (5, 3962436), (6, 3302030), (10, 1981218), (12, 1651015), (15, 1320812), (20, 990609), (30, 660406), (60, 330203)]