21870567

素因数分解:

$3^4\times {\mathrm{193}}^1\times {\mathrm{1399}}^1$

素因数の和:1604

約数の個数: 20

約数和(自身を含む): 32863600

約数和(自身を除く): 10993033

約数列:

[1, 3, 9, 27, 81, 193, 579, 1399, 1737, 4197, 5211, 12591, 15633, 37773, 113319, 270007, 810021, 2430063, 7290189, 21870567]

約数ペア:

[(1, 21870567), (3, 7290189), (9, 2430063), (27, 810021), (81, 270007), (193, 113319), (579, 37773), (1399, 15633), (1737, 12591), (4197, 5211)]