212045121

素因数分解:

$3^4\times {\mathrm{71}}^1\times {\mathrm{36871}}^1$

素因数の和:36954

約数の個数: 20

約数和(自身を含む): 321228864

約数和(自身を除く): 109183743

約数列:

[1, 3, 9, 27, 71, 81, 213, 639, 1917, 5751, 36871, 110613, 331839, 995517, 2617841, 2986551, 7853523, 23560569, 70681707, 212045121]

約数ペア:

[(1, 212045121), (3, 70681707), (9, 23560569), (27, 7853523), (71, 2986551), (81, 2617841), (213, 995517), (639, 331839), (1917, 110613), (5751, 36871)]