199971729

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{937}}^1\times {\mathrm{1031}}^1$

素因数の和:1997

約数の個数: 24

約数和(自身を含む): 302020992

約数和(自身を除く): 102049263

約数列:

[1, 3, 9, 23, 69, 207, 937, 1031, 2811, 3093, 8433, 9279, 21551, 23713, 64653, 71139, 193959, 213417, 966047, 2898141, 8694423, 22219081, 66657243, 199971729]

約数ペア:

[(1, 199971729), (3, 66657243), (9, 22219081), (23, 8694423), (69, 2898141), (207, 966047), (937, 213417), (1031, 193959), (2811, 71139), (3093, 64653), (8433, 23713), (9279, 21551)]