20257578

素因数分解:

$2^1\times 3^2\times {\mathrm{11}}^2\times {\mathrm{71}}^1\times {\mathrm{131}}^1$

素因数の和:232

約数の個数: 72

約数和(自身を含む): 49297248

約数和(自身を除く): 29039670

約数列:

[1, 2, 3, 6, 9, 11, 18, 22, 33, 66, 71, 99, 121, 131, 142, 198, 213, 242, 262, 363, 393, 426, 639, 726, 781, 786, 1089, 1179, 1278, 1441, 1562, 2178, 2343, 2358, 2882, 4323, 4686, 7029, 8591, 8646, 9301, 12969, 14058, 15851, 17182, 18602, 25773, 25938, 27903, 31702, 47553, 51546, 55806, 77319, 83709, 95106, 102311, 142659, 154638, 167418, 204622, 285318, 306933, 613866, 920799, 1125421, 1841598, 2250842, 3376263, 6752526, 10128789, 20257578]

約数ペア:

[(1, 20257578), (2, 10128789), (3, 6752526), (6, 3376263), (9, 2250842), (11, 1841598), (18, 1125421), (22, 920799), (33, 613866), (66, 306933), (71, 285318), (99, 204622), (121, 167418), (131, 154638), (142, 142659), (198, 102311), (213, 95106), (242, 83709), (262, 77319), (363, 55806), (393, 51546), (426, 47553), (639, 31702), (726, 27903), (781, 25938), (786, 25773), (1089, 18602), (1179, 17182), (1278, 15851), (1441, 14058), (1562, 12969), (2178, 9301), (2343, 8646), (2358, 8591), (2882, 7029), (4323, 4686)]