20955168

素因数分解:

$2^5\times 3^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{193}}^1$

素因数の和:251

約数の個数: 144

約数和(自身を含む): 66732120

約数和(自身を除く): 45776952

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 18, 24, 26, 29, 32, 36, 39, 48, 52, 58, 72, 78, 87, 96, 104, 116, 117, 144, 156, 174, 193, 208, 232, 234, 261, 288, 312, 348, 377, 386, 416, 464, 468, 522, 579, 624, 696, 754, 772, 928, 936, 1044, 1131, 1158, 1248, 1392, 1508, 1544, 1737, 1872, 2088, 2262, 2316, 2509, 2784, 3016, 3088, 3393, 3474, 3744, 4176, 4524, 4632, 5018, 5597, 6032, 6176, 6786, 6948, 7527, 8352, 9048, 9264, 10036, 11194, 12064, 13572, 13896, 15054, 16791, 18096, 18528, 20072, 22388, 22581, 27144, 27792, 30108, 33582, 36192, 40144, 44776, 45162, 50373, 54288, 55584, 60216, 67164, 72761, 80288, 89552, 90324, 100746, 108576, 120432, 134328, 145522, 179104, 180648, 201492, 218283, 240864, 268656, 291044, 361296, 402984, 436566, 537312, 582088, 654849, 722592, 805968, 873132, 1164176, 1309698, 1611936, 1746264, 2328352, 2619396, 3492528, 5238792, 6985056, 10477584, 20955168]

約数ペア:

[(1, 20955168), (2, 10477584), (3, 6985056), (4, 5238792), (6, 3492528), (8, 2619396), (9, 2328352), (12, 1746264), (13, 1611936), (16, 1309698), (18, 1164176), (24, 873132), (26, 805968), (29, 722592), (32, 654849), (36, 582088), (39, 537312), (48, 436566), (52, 402984), (58, 361296), (72, 291044), (78, 268656), (87, 240864), (96, 218283), (104, 201492), (116, 180648), (117, 179104), (144, 145522), (156, 134328), (174, 120432), (193, 108576), (208, 100746), (232, 90324), (234, 89552), (261, 80288), (288, 72761), (312, 67164), (348, 60216), (377, 55584), (386, 54288), (416, 50373), (464, 45162), (468, 44776), (522, 40144), (579, 36192), (624, 33582), (696, 30108), (754, 27792), (772, 27144), (928, 22581), (936, 22388), (1044, 20072), (1131, 18528), (1158, 18096), (1248, 16791), (1392, 15054), (1508, 13896), (1544, 13572), (1737, 12064), (1872, 11194), (2088, 10036), (2262, 9264), (2316, 9048), (2509, 8352), (2784, 7527), (3016, 6948), (3088, 6786), (3393, 6176), (3474, 6032), (3744, 5597), (4176, 5018), (4524, 4632)]