20728708

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{167}}^1$

素因数の和:233

約数の個数: 96

約数和(自身を含む): 50577408

約数和(自身を除く): 29848700

約数列:

[1, 2, 4, 7, 11, 13, 14, 22, 26, 28, 31, 44, 52, 62, 77, 91, 124, 143, 154, 167, 182, 217, 286, 308, 334, 341, 364, 403, 434, 572, 668, 682, 806, 868, 1001, 1169, 1364, 1612, 1837, 2002, 2171, 2338, 2387, 2821, 3674, 4004, 4342, 4433, 4676, 4774, 5177, 5642, 7348, 8684, 8866, 9548, 10354, 11284, 12859, 15197, 17732, 20708, 23881, 25718, 30394, 31031, 36239, 47762, 51436, 56947, 60788, 62062, 67301, 72478, 95524, 113894, 124124, 134602, 144956, 167167, 227788, 269204, 334334, 398629, 471107, 668668, 740311, 797258, 942214, 1480622, 1594516, 1884428, 2961244, 5182177, 10364354, 20728708]

約数ペア:

[(1, 20728708), (2, 10364354), (4, 5182177), (7, 2961244), (11, 1884428), (13, 1594516), (14, 1480622), (22, 942214), (26, 797258), (28, 740311), (31, 668668), (44, 471107), (52, 398629), (62, 334334), (77, 269204), (91, 227788), (124, 167167), (143, 144956), (154, 134602), (167, 124124), (182, 113894), (217, 95524), (286, 72478), (308, 67301), (334, 62062), (341, 60788), (364, 56947), (403, 51436), (434, 47762), (572, 36239), (668, 31031), (682, 30394), (806, 25718), (868, 23881), (1001, 20708), (1169, 17732), (1364, 15197), (1612, 12859), (1837, 11284), (2002, 10354), (2171, 9548), (2338, 8866), (2387, 8684), (2821, 7348), (3674, 5642), (4004, 5177), (4342, 4774), (4433, 4676)]