21140289

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{1399}}^1$

素因数の和:1501

約数の個数: 24

約数和(自身を含む): 32323200

約数和(自身を除く): 11182911

約数列:

[1, 3, 9, 23, 69, 73, 207, 219, 657, 1399, 1679, 4197, 5037, 12591, 15111, 32177, 96531, 102127, 289593, 306381, 919143, 2348921, 7046763, 21140289]

約数ペア:

[(1, 21140289), (3, 7046763), (9, 2348921), (23, 919143), (69, 306381), (73, 289593), (207, 102127), (219, 96531), (657, 32177), (1399, 15111), (1679, 12591), (4197, 5037)]