19878313

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{11497}}^1$

素因数の和:11536

約数の個数: 16

約数和(自身を含む): 25755520

約数和(自身を除く): 5877207

約数列:

[1, 7, 13, 19, 91, 133, 247, 1729, 11497, 80479, 149461, 218443, 1046227, 1529101, 2839759, 19878313]

約数ペア:

[(1, 19878313), (7, 2839759), (13, 1529101), (19, 1046227), (91, 218443), (133, 149461), (247, 80479), (1729, 11497)]