20717658

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1$

素因数の和:164

約数の個数: 96

約数和(自身を含む): 51891840

約数和(自身を除く): 31174182

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 29, 39, 43, 58, 71, 78, 86, 87, 117, 129, 142, 174, 213, 234, 258, 261, 377, 387, 426, 522, 559, 639, 754, 774, 923, 1118, 1131, 1247, 1278, 1677, 1846, 2059, 2262, 2494, 2769, 3053, 3354, 3393, 3741, 4118, 5031, 5538, 6106, 6177, 6786, 7482, 8307, 9159, 10062, 11223, 12354, 16211, 16614, 18318, 18531, 22446, 26767, 27477, 32422, 37062, 39689, 48633, 53534, 54954, 79378, 80301, 88537, 97266, 119067, 145899, 160602, 177074, 238134, 240903, 265611, 291798, 357201, 481806, 531222, 714402, 796833, 1150981, 1593666, 2301962, 3452943, 6905886, 10358829, 20717658]

約数ペア:

[(1, 20717658), (2, 10358829), (3, 6905886), (6, 3452943), (9, 2301962), (13, 1593666), (18, 1150981), (26, 796833), (29, 714402), (39, 531222), (43, 481806), (58, 357201), (71, 291798), (78, 265611), (86, 240903), (87, 238134), (117, 177074), (129, 160602), (142, 145899), (174, 119067), (213, 97266), (234, 88537), (258, 80301), (261, 79378), (377, 54954), (387, 53534), (426, 48633), (522, 39689), (559, 37062), (639, 32422), (754, 27477), (774, 26767), (923, 22446), (1118, 18531), (1131, 18318), (1247, 16614), (1278, 16211), (1677, 12354), (1846, 11223), (2059, 10062), (2262, 9159), (2494, 8307), (2769, 7482), (3053, 6786), (3354, 6177), (3393, 6106), (3741, 5538), (4118, 5031)]