17997861

素因数分解:

$3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{12071}}^1$

素因数の和:12152

約数の個数: 16

約数和(自身を含む): 27813888

約数和(自身を除く): 9816027

約数列:

[1, 3, 7, 21, 71, 213, 497, 1491, 12071, 36213, 84497, 253491, 857041, 2571123, 5999287, 17997861]

約数ペア:

[(1, 17997861), (3, 5999287), (7, 2571123), (21, 857041), (71, 253491), (213, 84497), (497, 36213), (1491, 12071)]