15123213

素因数分解:

$3^3\times 7^3\times {\mathrm{23}}^1\times {\mathrm{71}}^1$

素因数の和:124

約数の個数: 64

約数和(自身を含む): 27648000

約数和(自身を除く): 12524787

約数列:

[1, 3, 7, 9, 21, 23, 27, 49, 63, 69, 71, 147, 161, 189, 207, 213, 343, 441, 483, 497, 621, 639, 1029, 1127, 1323, 1449, 1491, 1633, 1917, 3087, 3381, 3479, 4347, 4473, 4899, 7889, 9261, 10143, 10437, 11431, 13419, 14697, 23667, 24353, 30429, 31311, 34293, 44091, 71001, 73059, 80017, 93933, 102879, 213003, 219177, 240051, 308637, 560119, 657531, 720153, 1680357, 2160459, 5041071, 15123213]

約数ペア:

[(1, 15123213), (3, 5041071), (7, 2160459), (9, 1680357), (21, 720153), (23, 657531), (27, 560119), (49, 308637), (63, 240051), (69, 219177), (71, 213003), (147, 102879), (161, 93933), (189, 80017), (207, 73059), (213, 71001), (343, 44091), (441, 34293), (483, 31311), (497, 30429), (621, 24353), (639, 23667), (1029, 14697), (1127, 13419), (1323, 11431), (1449, 10437), (1491, 10143), (1633, 9261), (1917, 7889), (3087, 4899), (3381, 4473), (3479, 4347)]