20319728

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{107}}^1$

素因数の和:222

約数の個数: 80

約数和(自身を含む): 47246976

約数和(自身を除く): 26927248

約数列:

[1, 2, 4, 8, 11, 13, 16, 22, 26, 44, 52, 83, 88, 104, 107, 143, 166, 176, 208, 214, 286, 332, 428, 572, 664, 856, 913, 1079, 1144, 1177, 1328, 1391, 1712, 1826, 2158, 2288, 2354, 2782, 3652, 4316, 4708, 5564, 7304, 8632, 8881, 9416, 11128, 11869, 14608, 15301, 17264, 17762, 18832, 22256, 23738, 30602, 35524, 47476, 61204, 71048, 94952, 97691, 115453, 122408, 142096, 189904, 195382, 230906, 244816, 390764, 461812, 781528, 923624, 1269983, 1563056, 1847248, 2539966, 5079932, 10159864, 20319728]

約数ペア:

[(1, 20319728), (2, 10159864), (4, 5079932), (8, 2539966), (11, 1847248), (13, 1563056), (16, 1269983), (22, 923624), (26, 781528), (44, 461812), (52, 390764), (83, 244816), (88, 230906), (104, 195382), (107, 189904), (143, 142096), (166, 122408), (176, 115453), (208, 97691), (214, 94952), (286, 71048), (332, 61204), (428, 47476), (572, 35524), (664, 30602), (856, 23738), (913, 22256), (1079, 18832), (1144, 17762), (1177, 17264), (1328, 15301), (1391, 14608), (1712, 11869), (1826, 11128), (2158, 9416), (2288, 8881), (2354, 8632), (2782, 7304), (3652, 5564), (4316, 4708)]