1221720227

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{169943}}^1$

素因数の和:170042

約数の個数: 16

約数和(自身を含む): 1522698240

約数和(自身を除く): 300978013

約数列:

[1, 7, 13, 79, 91, 553, 1027, 7189, 169943, 1189601, 2209259, 13425497, 15464813, 93978479, 174531461, 1221720227]

約数ペア:

[(1, 1221720227), (7, 174531461), (13, 93978479), (79, 15464813), (91, 13425497), (553, 2209259), (1027, 1189601), (7189, 169943)]