20970397

素因数分解:

$7^1\times {\mathrm{61}}^1\times {\mathrm{67}}^1\times {\mathrm{733}}^1$

素因数の和:868

約数の個数: 16

約数和(自身を含む): 24756352

約数和(自身を除く): 3785955

約数列:

[1, 7, 61, 67, 427, 469, 733, 4087, 5131, 28609, 44713, 49111, 312991, 343777, 2995771, 20970397]

約数ペア:

[(1, 20970397), (7, 2995771), (61, 343777), (67, 312991), (427, 49111), (469, 44713), (733, 28609), (4087, 5131)]