28389347

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{107}}^1\times {\mathrm{1307}}^1$

素因数の和:1450

約数の個数: 16

約数和(自身を含む): 33903360

約数和(自身を除く): 5514013

約数列:

[1, 7, 29, 107, 203, 749, 1307, 3103, 9149, 21721, 37903, 139849, 265321, 978943, 4055621, 28389347]

約数ペア:

[(1, 28389347), (7, 4055621), (29, 978943), (107, 265321), (203, 139849), (749, 37903), (1307, 21721), (3103, 9149)]