21258018

素因数分解:

$2^1\times 3^3\times {\mathrm{393667}}^1$

素因数の和:393678

約数の個数: 16

約数和(自身を含む): 47240160

約数和(自身を除く): 25982142

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 393667, 787334, 1181001, 2362002, 3543003, 7086006, 10629009, 21258018]

約数ペア:

[(1, 21258018), (2, 10629009), (3, 7086006), (6, 3543003), (9, 2362002), (18, 1181001), (27, 787334), (54, 393667)]