21067188478

素因数分解:

$2^1\times 7^2\times {\mathrm{1361}}^1\times {\mathrm{157951}}^1$

素因数の和:159328

約数の個数: 24

約数和(自身を含む): 36787336704

約数和(自身を除く): 15720148226

約数列:

[1, 2, 7, 14, 49, 98, 1361, 2722, 9527, 19054, 66689, 133378, 157951, 315902, 1105657, 2211314, 7739599, 15479198, 214971311, 429942622, 1504799177, 3009598354, 10533594239, 21067188478]

約数ペア:

[(1, 21067188478), (2, 10533594239), (7, 3009598354), (14, 1504799177), (49, 429942622), (98, 214971311), (1361, 15479198), (2722, 7739599), (9527, 2211314), (19054, 1105657), (66689, 315902), (133378, 157951)]