20671983

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{1553}}^1$

素因数の和:1608

約数の個数: 32

約数和(自身を含む): 33566400

約数和(自身を除く): 12894417

約数列:

[1, 3, 9, 17, 27, 29, 51, 87, 153, 261, 459, 493, 783, 1479, 1553, 4437, 4659, 13311, 13977, 26401, 41931, 45037, 79203, 135111, 237609, 405333, 712827, 765629, 1215999, 2296887, 6890661, 20671983]

約数ペア:

[(1, 20671983), (3, 6890661), (9, 2296887), (17, 1215999), (27, 765629), (29, 712827), (51, 405333), (87, 237609), (153, 135111), (261, 79203), (459, 45037), (493, 41931), (783, 26401), (1479, 13977), (1553, 13311), (4437, 4659)]