28139041

素因数分解:

$7^1\times {\mathrm{31}}^2\times {\mathrm{47}}^1\times {\mathrm{89}}^1$

素因数の和:205

約数の個数: 24

約数和(自身を含む): 34318080

約数和(自身を除く): 6179039

約数列:

[1, 7, 31, 47, 89, 217, 329, 623, 961, 1457, 2759, 4183, 6727, 10199, 19313, 29281, 45167, 85529, 129673, 316169, 598703, 907711, 4019863, 28139041]

約数ペア:

[(1, 28139041), (7, 4019863), (31, 907711), (47, 598703), (89, 316169), (217, 129673), (329, 85529), (623, 45167), (961, 29281), (1457, 19313), (2759, 10199), (4183, 6727)]