28009145

素因数分解:

$5^1\times {\mathrm{71}}^1\times {\mathrm{257}}^1\times {\mathrm{307}}^1$

素因数の和:640

約数の個数: 16

約数和(自身を含む): 34328448

約数和(自身を除く): 6319303

約数列:

[1, 5, 71, 257, 307, 355, 1285, 1535, 18247, 21797, 78899, 91235, 108985, 394495, 5601829, 28009145]

約数ペア:

[(1, 28009145), (5, 5601829), (71, 394495), (257, 108985), (307, 91235), (355, 78899), (1285, 21797), (1535, 18247)]