21497265

素因数分解:

$3^3\times 5^1\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1$

素因数の和:96

約数の個数: 96

約数和(自身を含む): 44208000

約数和(自身を除く): 22710735

約数列:

[1, 3, 5, 9, 15, 17, 19, 27, 29, 45, 51, 57, 85, 87, 95, 135, 145, 153, 171, 255, 261, 285, 289, 323, 435, 459, 493, 513, 551, 765, 783, 855, 867, 969, 1305, 1445, 1479, 1615, 1653, 2295, 2465, 2565, 2601, 2755, 2907, 3915, 4335, 4437, 4845, 4959, 5491, 7395, 7803, 8265, 8381, 8721, 9367, 13005, 13311, 14535, 14877, 16473, 22185, 24795, 25143, 27455, 28101, 39015, 41905, 43605, 46835, 49419, 66555, 74385, 75429, 82365, 84303, 125715, 140505, 148257, 159239, 226287, 247095, 252909, 377145, 421515, 477717, 741285, 796195, 1131435, 1264545, 1433151, 2388585, 4299453, 7165755, 21497265]

約数ペア:

[(1, 21497265), (3, 7165755), (5, 4299453), (9, 2388585), (15, 1433151), (17, 1264545), (19, 1131435), (27, 796195), (29, 741285), (45, 477717), (51, 421515), (57, 377145), (85, 252909), (87, 247095), (95, 226287), (135, 159239), (145, 148257), (153, 140505), (171, 125715), (255, 84303), (261, 82365), (285, 75429), (289, 74385), (323, 66555), (435, 49419), (459, 46835), (493, 43605), (513, 41905), (551, 39015), (765, 28101), (783, 27455), (855, 25143), (867, 24795), (969, 22185), (1305, 16473), (1445, 14877), (1479, 14535), (1615, 13311), (1653, 13005), (2295, 9367), (2465, 8721), (2565, 8381), (2601, 8265), (2755, 7803), (2907, 7395), (3915, 5491), (4335, 4959), (4437, 4845)]