28751541

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{241}}^1$

素因数の和:306

約数の個数: 64

約数和(自身を含む): 52039680

約数和(自身を除く): 23288139

約数列:

[1, 3, 7, 13, 19, 21, 23, 39, 57, 69, 91, 133, 161, 241, 247, 273, 299, 399, 437, 483, 723, 741, 897, 1311, 1687, 1729, 2093, 3059, 3133, 4579, 5061, 5187, 5543, 5681, 6279, 9177, 9399, 13737, 16629, 17043, 21931, 32053, 38801, 39767, 59527, 65793, 72059, 96159, 105317, 116403, 119301, 178581, 216177, 315951, 416689, 504413, 737219, 1250067, 1369121, 1513239, 2211657, 4107363, 9583847, 28751541]

約数ペア:

[(1, 28751541), (3, 9583847), (7, 4107363), (13, 2211657), (19, 1513239), (21, 1369121), (23, 1250067), (39, 737219), (57, 504413), (69, 416689), (91, 315951), (133, 216177), (161, 178581), (241, 119301), (247, 116403), (273, 105317), (299, 96159), (399, 72059), (437, 65793), (483, 59527), (723, 39767), (741, 38801), (897, 32053), (1311, 21931), (1687, 17043), (1729, 16629), (2093, 13737), (3059, 9399), (3133, 9177), (4579, 6279), (5061, 5681), (5187, 5543)]