205990421

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{21977}}^1$

素因数の和:22100

約数の個数: 16

約数和(自身を含む): 255999744

約数和(自身を除く): 50009323

約数列:

[1, 7, 13, 91, 103, 721, 1339, 9373, 21977, 153839, 285701, 1999907, 2263631, 15845417, 29427203, 205990421]

約数ペア:

[(1, 205990421), (7, 29427203), (13, 15845417), (91, 2263631), (103, 1999907), (721, 285701), (1339, 153839), (9373, 21977)]