28704221

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{5171}}^1$

素因数の和:5252

約数の個数: 16

約数和(自身を含む): 35914368

約数和(自身を除く): 7210147

約数列:

[1, 7, 13, 61, 91, 427, 793, 5171, 5551, 36197, 67223, 315431, 470561, 2208017, 4100603, 28704221]

約数ペア:

[(1, 28704221), (7, 4100603), (13, 2208017), (61, 470561), (91, 315431), (427, 67223), (793, 36197), (5171, 5551)]