664631

素因数分解:

${\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1$

素因数の和:142

約数の個数: 16

約数和(自身を含む): 787968

約数和(自身を除く): 123337

約数列:

[1, 11, 23, 37, 71, 253, 407, 781, 851, 1633, 2627, 9361, 17963, 28897, 60421, 664631]

約数ペア:

[(1, 664631), (11, 60421), (23, 28897), (37, 17963), (71, 9361), (253, 2627), (407, 1633), (781, 851)]