21658119

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{103}}^1$

素因数の和:180

約数の個数: 64

約数和(自身を含む): 38338560

約数和(自身を除く): 16680441

約数列:

[1, 3, 7, 17, 19, 21, 31, 51, 57, 93, 103, 119, 133, 217, 309, 323, 357, 399, 527, 589, 651, 721, 969, 1581, 1751, 1767, 1957, 2163, 2261, 3193, 3689, 4123, 5253, 5871, 6783, 9579, 10013, 11067, 12257, 12369, 13699, 22351, 30039, 33269, 36771, 41097, 54281, 60667, 67053, 70091, 99807, 162843, 182001, 210273, 232883, 379967, 424669, 698649, 1031339, 1139901, 1274007, 3094017, 7219373, 21658119]

約数ペア:

[(1, 21658119), (3, 7219373), (7, 3094017), (17, 1274007), (19, 1139901), (21, 1031339), (31, 698649), (51, 424669), (57, 379967), (93, 232883), (103, 210273), (119, 182001), (133, 162843), (217, 99807), (309, 70091), (323, 67053), (357, 60667), (399, 54281), (527, 41097), (589, 36771), (651, 33269), (721, 30039), (969, 22351), (1581, 13699), (1751, 12369), (1767, 12257), (1957, 11067), (2163, 10013), (2261, 9579), (3193, 6783), (3689, 5871), (4123, 5253)]