15720891

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{3209}}^1$

素因数の和:3306

約数の個数: 16

約数和(自身を含む): 22187520

約数和(自身を除く): 6466629

約数列:

[1, 3, 23, 69, 71, 213, 1633, 3209, 4899, 9627, 73807, 221421, 227839, 683517, 5240297, 15720891]

約数ペア:

[(1, 15720891), (3, 5240297), (23, 683517), (69, 227839), (71, 221421), (213, 73807), (1633, 9627), (3209, 4899)]