28005411

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{271}}^1$

素因数の和:344

約数の個数: 48

約数和(自身を含む): 47132160

約数和(自身を除く): 19126749

約数列:

[1, 3, 7, 19, 21, 37, 49, 57, 111, 133, 147, 259, 271, 399, 703, 777, 813, 931, 1813, 1897, 2109, 2793, 4921, 5149, 5439, 5691, 10027, 13279, 14763, 15447, 30081, 34447, 36043, 39837, 70189, 103341, 108129, 190513, 210567, 252301, 491323, 571539, 756903, 1333591, 1473969, 4000773, 9335137, 28005411]

約数ペア:

[(1, 28005411), (3, 9335137), (7, 4000773), (19, 1473969), (21, 1333591), (37, 756903), (49, 571539), (57, 491323), (111, 252301), (133, 210567), (147, 190513), (259, 108129), (271, 103341), (399, 70189), (703, 39837), (777, 36043), (813, 34447), (931, 30081), (1813, 15447), (1897, 14763), (2109, 13279), (2793, 10027), (4921, 5691), (5149, 5439)]