16403391

素因数分解:

$3^4\times {\mathrm{313}}^1\times {\mathrm{647}}^1$

素因数の和:972

約数の個数: 20

約数和(自身を含む): 24620112

約数和(自身を除く): 8216721

約数列:

[1, 3, 9, 27, 81, 313, 647, 939, 1941, 2817, 5823, 8451, 17469, 25353, 52407, 202511, 607533, 1822599, 5467797, 16403391]

約数ペア:

[(1, 16403391), (3, 5467797), (9, 1822599), (27, 607533), (81, 202511), (313, 52407), (647, 25353), (939, 17469), (1941, 8451), (2817, 5823)]