28178906

素因数分解:

$2^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{28349}}^1$

素因数の和:28429

約数の個数: 16

約数和(自身を含む): 48988800

約数和(自身を除く): 20809894

約数列:

[1, 2, 7, 14, 71, 142, 497, 994, 28349, 56698, 198443, 396886, 2012779, 4025558, 14089453, 28178906]

約数ペア:

[(1, 28178906), (2, 14089453), (7, 4025558), (14, 2012779), (71, 396886), (142, 198443), (497, 56698), (994, 28349)]