18664551

素因数分解:

$3^2\times {\mathrm{71}}^1\times {\mathrm{29209}}^1$

素因数の和:29286

約数の個数: 12

約数和(自身を含む): 27340560

約数和(自身を除く): 8676009

約数列:

[1, 3, 9, 71, 213, 639, 29209, 87627, 262881, 2073839, 6221517, 18664551]

約数ペア:

[(1, 18664551), (3, 6221517), (9, 2073839), (71, 262881), (213, 87627), (639, 29209)]