28200987

素因数分解:

$3^3\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{313}}^1$

素因数の和:440

約数の個数: 32

約数和(自身を含む): 43407360

約数和(自身を除く): 15206373

約数列:

[1, 3, 9, 27, 47, 71, 141, 213, 313, 423, 639, 939, 1269, 1917, 2817, 3337, 8451, 10011, 14711, 22223, 30033, 44133, 66669, 90099, 132399, 200007, 397197, 600021, 1044481, 3133443, 9400329, 28200987]

約数ペア:

[(1, 28200987), (3, 9400329), (9, 3133443), (27, 1044481), (47, 600021), (71, 397197), (141, 200007), (213, 132399), (313, 90099), (423, 66669), (639, 44133), (939, 30033), (1269, 22223), (1917, 14711), (2817, 10011), (3337, 8451)]