20168217

素因数分解:

$3^3\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{691}}^1$

素因数の和:770

約数の個数: 32

約数和(自身を含む): 31887360

約数和(自身を除く): 11719143

約数列:

[1, 3, 9, 23, 27, 47, 69, 141, 207, 423, 621, 691, 1081, 1269, 2073, 3243, 6219, 9729, 15893, 18657, 29187, 32477, 47679, 97431, 143037, 292293, 429111, 746971, 876879, 2240913, 6722739, 20168217]

約数ペア:

[(1, 20168217), (3, 6722739), (9, 2240913), (23, 876879), (27, 746971), (47, 429111), (69, 292293), (141, 143037), (207, 97431), (423, 47679), (621, 32477), (691, 29187), (1081, 18657), (1269, 15893), (2073, 9729), (3243, 6219)]