28191331

素因数分解:

$7^1\times {\mathrm{71}}^1\times {\mathrm{131}}^1\times {\mathrm{433}}^1$

素因数の和:642

約数の個数: 16

約数和(自身を含む): 32997888

約数和(自身を除く): 4806557

約数列:

[1, 7, 71, 131, 433, 497, 917, 3031, 9301, 30743, 56723, 65107, 215201, 397061, 4027333, 28191331]

約数ペア:

[(1, 28191331), (7, 4027333), (71, 397061), (131, 215201), (433, 65107), (497, 56723), (917, 30743), (3031, 9301)]