257324613

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{293}}^1\times {\mathrm{3217}}^1$

素因数の和:3533

約数の個数: 32

約数和(自身を含む): 423849216

約数和(自身を除く): 166524603

約数列:

[1, 3, 7, 13, 21, 39, 91, 273, 293, 879, 2051, 3217, 3809, 6153, 9651, 11427, 22519, 26663, 41821, 67557, 79989, 125463, 292747, 878241, 942581, 2827743, 6598067, 12253553, 19794201, 36760659, 85774871, 257324613]

約数ペア:

[(1, 257324613), (3, 85774871), (7, 36760659), (13, 19794201), (21, 12253553), (39, 6598067), (91, 2827743), (273, 942581), (293, 878241), (879, 292747), (2051, 125463), (3217, 79989), (3809, 67557), (6153, 41821), (9651, 26663), (11427, 22519)]