81969363

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^2$

素因数の和:157

約数の個数: 72

約数和(自身を含む): 150225920

約数和(自身を除く): 68256557

約数列:

[1, 3, 7, 9, 19, 21, 31, 47, 57, 63, 93, 133, 141, 171, 217, 279, 329, 399, 423, 589, 651, 893, 987, 1197, 1457, 1767, 1953, 2209, 2679, 2961, 4123, 4371, 5301, 6251, 6627, 8037, 10199, 12369, 13113, 15463, 18753, 19881, 27683, 30597, 37107, 41971, 46389, 56259, 68479, 83049, 91791, 125913, 139167, 193781, 205437, 249147, 293797, 377739, 479353, 581343, 616311, 881391, 1301101, 1438059, 1744029, 2644173, 3903303, 4314177, 9107707, 11709909, 27323121, 81969363]

約数ペア:

[(1, 81969363), (3, 27323121), (7, 11709909), (9, 9107707), (19, 4314177), (21, 3903303), (31, 2644173), (47, 1744029), (57, 1438059), (63, 1301101), (93, 881391), (133, 616311), (141, 581343), (171, 479353), (217, 377739), (279, 293797), (329, 249147), (399, 205437), (423, 193781), (589, 139167), (651, 125913), (893, 91791), (987, 83049), (1197, 68479), (1457, 56259), (1767, 46389), (1953, 41971), (2209, 37107), (2679, 30597), (2961, 27683), (4123, 19881), (4371, 18753), (5301, 15463), (6251, 13113), (6627, 12369), (8037, 10199)]