20312559

素因数分解:

$3^3\times {\mathrm{79}}^1\times {\mathrm{89}}^1\times {\mathrm{107}}^1$

素因数の和:284

約数の個数: 32

約数和(自身を含む): 31104000

約数和(自身を除く): 10791441

約数列:

[1, 3, 9, 27, 79, 89, 107, 237, 267, 321, 711, 801, 963, 2133, 2403, 2889, 7031, 8453, 9523, 21093, 25359, 28569, 63279, 76077, 85707, 189837, 228231, 257121, 752317, 2256951, 6770853, 20312559]

約数ペア:

[(1, 20312559), (3, 6770853), (9, 2256951), (27, 752317), (79, 257121), (89, 228231), (107, 189837), (237, 85707), (267, 76077), (321, 63279), (711, 28569), (801, 25359), (963, 21093), (2133, 9523), (2403, 8453), (2889, 7031)]