21737261

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{4507}}^1$

素因数の和:4580

約数の個数: 16

約数和(自身を含む): 27264384

約数和(自身を除く): 5527123

約数列:

[1, 7, 13, 53, 91, 371, 689, 4507, 4823, 31549, 58591, 238871, 410137, 1672097, 3105323, 21737261]

約数ペア:

[(1, 21737261), (7, 3105323), (13, 1672097), (53, 410137), (91, 238871), (371, 58591), (689, 31549), (4507, 4823)]