21666216

素因数分解:

$2^3\times 3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{107}}^1$

素因数の和:199

約数の個数: 128

約数和(自身を含む): 65318400

約数和(自身を除く): 43652184

約数列:

[1, 2, 3, 4, 6, 8, 11, 12, 13, 22, 24, 26, 33, 39, 44, 52, 59, 66, 78, 88, 104, 107, 118, 132, 143, 156, 177, 214, 236, 264, 286, 312, 321, 354, 428, 429, 472, 572, 642, 649, 708, 767, 856, 858, 1144, 1177, 1284, 1298, 1391, 1416, 1534, 1716, 1947, 2301, 2354, 2568, 2596, 2782, 3068, 3432, 3531, 3894, 4173, 4602, 4708, 5192, 5564, 6136, 6313, 7062, 7788, 8346, 8437, 9204, 9416, 11128, 12626, 14124, 15301, 15576, 16692, 16874, 18408, 18939, 25252, 25311, 28248, 30602, 33384, 33748, 37878, 45903, 50504, 50622, 61204, 67496, 69443, 75756, 82069, 91806, 101244, 122408, 138886, 151512, 164138, 183612, 202488, 208329, 246207, 277772, 328276, 367224, 416658, 492414, 555544, 656552, 833316, 902759, 984828, 1666632, 1805518, 1969656, 2708277, 3611036, 5416554, 7222072, 10833108, 21666216]

約数ペア:

[(1, 21666216), (2, 10833108), (3, 7222072), (4, 5416554), (6, 3611036), (8, 2708277), (11, 1969656), (12, 1805518), (13, 1666632), (22, 984828), (24, 902759), (26, 833316), (33, 656552), (39, 555544), (44, 492414), (52, 416658), (59, 367224), (66, 328276), (78, 277772), (88, 246207), (104, 208329), (107, 202488), (118, 183612), (132, 164138), (143, 151512), (156, 138886), (177, 122408), (214, 101244), (236, 91806), (264, 82069), (286, 75756), (312, 69443), (321, 67496), (354, 61204), (428, 50622), (429, 50504), (472, 45903), (572, 37878), (642, 33748), (649, 33384), (708, 30602), (767, 28248), (856, 25311), (858, 25252), (1144, 18939), (1177, 18408), (1284, 16874), (1298, 16692), (1391, 15576), (1416, 15301), (1534, 14124), (1716, 12626), (1947, 11128), (2301, 9416), (2354, 9204), (2568, 8437), (2596, 8346), (2782, 7788), (3068, 7062), (3432, 6313), (3531, 6136), (3894, 5564), (4173, 5192), (4602, 4708)]