20109825

素因数分解:

$3^2\times 5^2\times {\mathrm{139}}^1\times {\mathrm{643}}^1$

素因数の和:798

約数の個数: 36

約数和(自身を含む): 36334480

約数和(自身を除く): 16224655

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 139, 225, 417, 643, 695, 1251, 1929, 2085, 3215, 3475, 5787, 6255, 9645, 10425, 16075, 28935, 31275, 48225, 89377, 144675, 268131, 446885, 804393, 1340655, 2234425, 4021965, 6703275, 20109825]

約数ペア:

[(1, 20109825), (3, 6703275), (5, 4021965), (9, 2234425), (15, 1340655), (25, 804393), (45, 446885), (75, 268131), (139, 144675), (225, 89377), (417, 48225), (643, 31275), (695, 28935), (1251, 16075), (1929, 10425), (2085, 9645), (3215, 6255), (3475, 5787)]