28218861

素因数分解:

$3^8\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1$

素因数の和:75

約数の個数: 72

約数和(自身を含む): 51015744

約数和(自身を除く): 22796883

約数列:

[1, 3, 9, 11, 17, 23, 27, 33, 51, 69, 81, 99, 153, 187, 207, 243, 253, 297, 391, 459, 561, 621, 729, 759, 891, 1173, 1377, 1683, 1863, 2187, 2277, 2673, 3519, 4131, 4301, 5049, 5589, 6561, 6831, 8019, 10557, 12393, 12903, 15147, 16767, 20493, 24057, 31671, 37179, 38709, 45441, 50301, 61479, 72171, 95013, 111537, 116127, 136323, 150903, 184437, 285039, 348381, 408969, 553311, 855117, 1045143, 1226907, 1659933, 2565351, 3135429, 9406287, 28218861]

約数ペア:

[(1, 28218861), (3, 9406287), (9, 3135429), (11, 2565351), (17, 1659933), (23, 1226907), (27, 1045143), (33, 855117), (51, 553311), (69, 408969), (81, 348381), (99, 285039), (153, 184437), (187, 150903), (207, 136323), (243, 116127), (253, 111537), (297, 95013), (391, 72171), (459, 61479), (561, 50301), (621, 45441), (729, 38709), (759, 37179), (891, 31671), (1173, 24057), (1377, 20493), (1683, 16767), (1863, 15147), (2187, 12903), (2277, 12393), (2673, 10557), (3519, 8019), (4131, 6831), (4301, 6561), (5049, 5589)]