28135751

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{643}}^1$

素因数の和:723

約数の個数: 24

約数和(自身を含む): 35239680

約数和(自身を除く): 7103929

約数列:

[1, 7, 19, 47, 49, 133, 329, 643, 893, 931, 2303, 4501, 6251, 12217, 30221, 31507, 43757, 85519, 211547, 574199, 598633, 1480829, 4019393, 28135751]

約数ペア:

[(1, 28135751), (7, 4019393), (19, 1480829), (47, 598633), (49, 574199), (133, 211547), (329, 85519), (643, 43757), (893, 31507), (931, 30221), (2303, 12217), (4501, 6251)]