20868897

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{193}}^1\times {\mathrm{271}}^1$

素因数の和:493

約数の個数: 32

約数和(自身を含む): 33771520

約数和(自身を除く): 12902623

約数列:

[1, 3, 7, 19, 21, 57, 133, 193, 271, 399, 579, 813, 1351, 1897, 3667, 4053, 5149, 5691, 11001, 15447, 25669, 36043, 52303, 77007, 108129, 156909, 366121, 993757, 1098363, 2981271, 6956299, 20868897]

約数ペア:

[(1, 20868897), (3, 6956299), (7, 2981271), (19, 1098363), (21, 993757), (57, 366121), (133, 156909), (193, 108129), (271, 77007), (399, 52303), (579, 36043), (813, 25669), (1351, 15447), (1897, 11001), (3667, 5691), (4053, 5149)]