20911689

素因数分解:

$3^4\times {\mathrm{431}}^1\times {\mathrm{599}}^1$

素因数の和:1042

約数の個数: 20

約数和(自身を含む): 31363200

約数和(自身を除く): 10451511

約数列:

[1, 3, 9, 27, 81, 431, 599, 1293, 1797, 3879, 5391, 11637, 16173, 34911, 48519, 258169, 774507, 2323521, 6970563, 20911689]

約数ペア:

[(1, 20911689), (3, 6970563), (9, 2323521), (27, 774507), (81, 258169), (431, 48519), (599, 34911), (1293, 16173), (1797, 11637), (3879, 5391)]