19857717

素因数分解:

$3^5\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1$

素因数の和:85

約数の個数: 96

約数和(自身を含む): 37739520

約数和(自身を除く): 17881803

約数列:

[1, 3, 9, 11, 17, 19, 23, 27, 33, 51, 57, 69, 81, 99, 153, 171, 187, 207, 209, 243, 253, 297, 323, 391, 437, 459, 513, 561, 621, 627, 759, 891, 969, 1173, 1311, 1377, 1539, 1683, 1863, 1881, 2277, 2673, 2907, 3519, 3553, 3933, 4131, 4301, 4617, 4807, 5049, 5589, 5643, 6831, 7429, 8721, 10557, 10659, 11799, 12903, 14421, 15147, 16929, 20493, 22287, 26163, 31671, 31977, 35397, 38709, 43263, 45441, 50787, 61479, 66861, 78489, 81719, 95013, 95931, 106191, 116127, 129789, 200583, 245157, 287793, 348381, 389367, 601749, 735471, 863379, 1045143, 1168101, 1805247, 2206413, 6619239, 19857717]

約数ペア:

[(1, 19857717), (3, 6619239), (9, 2206413), (11, 1805247), (17, 1168101), (19, 1045143), (23, 863379), (27, 735471), (33, 601749), (51, 389367), (57, 348381), (69, 287793), (81, 245157), (99, 200583), (153, 129789), (171, 116127), (187, 106191), (207, 95931), (209, 95013), (243, 81719), (253, 78489), (297, 66861), (323, 61479), (391, 50787), (437, 45441), (459, 43263), (513, 38709), (561, 35397), (621, 31977), (627, 31671), (759, 26163), (891, 22287), (969, 20493), (1173, 16929), (1311, 15147), (1377, 14421), (1539, 12903), (1683, 11799), (1863, 10659), (1881, 10557), (2277, 8721), (2673, 7429), (2907, 6831), (3519, 5643), (3553, 5589), (3933, 5049), (4131, 4807), (4301, 4617)]