209905215

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{839}}^1\times {\mathrm{1283}}^1$

素因数の和:2143

約数の個数: 32

約数和(自身を含む): 362396160

約数和(自身を除く): 152490945

約数列:

[1, 3, 5, 13, 15, 39, 65, 195, 839, 1283, 2517, 3849, 4195, 6415, 10907, 12585, 16679, 19245, 32721, 50037, 54535, 83395, 163605, 250185, 1076437, 3229311, 5382185, 13993681, 16146555, 41981043, 69968405, 209905215]

約数ペア:

[(1, 209905215), (3, 69968405), (5, 41981043), (13, 16146555), (15, 13993681), (39, 5382185), (65, 3229311), (195, 1076437), (839, 250185), (1283, 163605), (2517, 83395), (3849, 54535), (4195, 50037), (6415, 32721), (10907, 19245), (12585, 16679)]