20831409

素因数分解:

$3^2\times {\mathrm{17}}^2\times {\mathrm{8009}}^1$

素因数の和:8049

約数の個数: 18

約数和(自身を含む): 31967910

約数和(自身を除く): 11136501

約数列:

[1, 3, 9, 17, 51, 153, 289, 867, 2601, 8009, 24027, 72081, 136153, 408459, 1225377, 2314601, 6943803, 20831409]

約数ペア:

[(1, 20831409), (3, 6943803), (9, 2314601), (17, 1225377), (51, 408459), (153, 136153), (289, 72081), (867, 24027), (2601, 8009)]