28217679

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{10103}}^1$

素因数の和:10139

約数の個数: 24

約数和(自身を含む): 46074240

約数和(自身を除く): 17856561

約数列:

[1, 3, 7, 19, 21, 49, 57, 133, 147, 399, 931, 2793, 10103, 30309, 70721, 191957, 212163, 495047, 575871, 1343699, 1485141, 4031097, 9405893, 28217679]

約数ペア:

[(1, 28217679), (3, 9405893), (7, 4031097), (19, 1485141), (21, 1343699), (49, 575871), (57, 495047), (133, 212163), (147, 191957), (399, 70721), (931, 30309), (2793, 10103)]