21321927

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{103}}^1$

素因数の和:181

約数の個数: 64

約数和(自身を含む): 37739520

約数和(自身を除く): 16417593

約数列:

[1, 3, 9, 11, 17, 27, 33, 41, 51, 99, 103, 123, 153, 187, 297, 309, 369, 451, 459, 561, 697, 927, 1107, 1133, 1353, 1683, 1751, 2091, 2781, 3399, 4059, 4223, 5049, 5253, 6273, 7667, 10197, 12177, 12669, 15759, 18819, 19261, 23001, 30591, 38007, 46453, 47277, 57783, 69003, 71791, 114021, 139359, 173349, 207009, 215373, 418077, 520047, 646119, 789701, 1254231, 1938357, 2369103, 7107309, 21321927]

約数ペア:

[(1, 21321927), (3, 7107309), (9, 2369103), (11, 1938357), (17, 1254231), (27, 789701), (33, 646119), (41, 520047), (51, 418077), (99, 215373), (103, 207009), (123, 173349), (153, 139359), (187, 114021), (297, 71791), (309, 69003), (369, 57783), (451, 47277), (459, 46453), (561, 38007), (697, 30591), (927, 23001), (1107, 19261), (1133, 18819), (1353, 15759), (1683, 12669), (1751, 12177), (2091, 10197), (2781, 7667), (3399, 6273), (4059, 5253), (4223, 5049)]