18123318

素因数分解:

$2^1\times 3^3\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{163}}^1$

素因数の和:274

約数の個数: 64

約数和(自身を含む): 42508800

約数和(自身を除く): 24385482

約数列:

[1, 2, 3, 6, 9, 18, 27, 29, 54, 58, 71, 87, 142, 163, 174, 213, 261, 326, 426, 489, 522, 639, 783, 978, 1278, 1467, 1566, 1917, 2059, 2934, 3834, 4118, 4401, 4727, 6177, 8802, 9454, 11573, 12354, 14181, 18531, 23146, 28362, 34719, 37062, 42543, 55593, 69438, 85086, 104157, 111186, 127629, 208314, 255258, 312471, 335617, 624942, 671234, 1006851, 2013702, 3020553, 6041106, 9061659, 18123318]

約数ペア:

[(1, 18123318), (2, 9061659), (3, 6041106), (6, 3020553), (9, 2013702), (18, 1006851), (27, 671234), (29, 624942), (54, 335617), (58, 312471), (71, 255258), (87, 208314), (142, 127629), (163, 111186), (174, 104157), (213, 85086), (261, 69438), (326, 55593), (426, 42543), (489, 37062), (522, 34719), (639, 28362), (783, 23146), (978, 18531), (1278, 14181), (1467, 12354), (1566, 11573), (1917, 9454), (2059, 8802), (2934, 6177), (3834, 4727), (4118, 4401)]