21218724

素因数分解:

$2^2\times 3^2\times {\mathrm{589409}}^1$

素因数の和:589419

約数の個数: 18

約数和(自身を含む): 53636310

約数和(自身を除く): 32417586

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 589409, 1178818, 1768227, 2357636, 3536454, 5304681, 7072908, 10609362, 21218724]

約数ペア:

[(1, 21218724), (2, 10609362), (3, 7072908), (4, 5304681), (6, 3536454), (9, 2357636), (12, 1768227), (18, 1178818), (36, 589409)]