81121271

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{211}}^1\times {\mathrm{4993}}^1$

素因数の和:5222

約数の個数: 16

約数和(自身を含む): 101637888

約数和(自身を除く): 20516617

約数列:

[1, 7, 11, 77, 211, 1477, 2321, 4993, 16247, 34951, 54923, 384461, 1053523, 7374661, 11588753, 81121271]

約数ペア:

[(1, 81121271), (7, 11588753), (11, 7374661), (77, 1053523), (211, 384461), (1477, 54923), (2321, 34951), (4993, 16247)]