28291893

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1$

素因数の和:186

約数の個数: 64

約数和(自身を含む): 49674240

約数和(自身を除く): 21382347

約数列:

[1, 3, 7, 17, 19, 21, 43, 51, 57, 97, 119, 129, 133, 291, 301, 323, 357, 399, 679, 731, 817, 903, 969, 1649, 1843, 2037, 2193, 2261, 2451, 4171, 4947, 5117, 5529, 5719, 6783, 11543, 12513, 12901, 13889, 15351, 17157, 29197, 31331, 34629, 38703, 41667, 70907, 79249, 87591, 93993, 97223, 212721, 219317, 237747, 291669, 496349, 554743, 657951, 1347233, 1489047, 1664229, 4041699, 9430631, 28291893]

約数ペア:

[(1, 28291893), (3, 9430631), (7, 4041699), (17, 1664229), (19, 1489047), (21, 1347233), (43, 657951), (51, 554743), (57, 496349), (97, 291669), (119, 237747), (129, 219317), (133, 212721), (291, 97223), (301, 93993), (323, 87591), (357, 79249), (399, 70907), (679, 41667), (731, 38703), (817, 34629), (903, 31331), (969, 29197), (1649, 17157), (1843, 15351), (2037, 13889), (2193, 12901), (2261, 12513), (2451, 11543), (4171, 6783), (4947, 5719), (5117, 5529)]