28812155

素因数分解:

$5^1\times {\mathrm{71}}^1\times {\mathrm{277}}^1\times {\mathrm{293}}^1$

素因数の和:646

約数の個数: 16

約数和(自身を含む): 35308224

約数和(自身を除く): 6496069

約数列:

[1, 5, 71, 277, 293, 355, 1385, 1465, 19667, 20803, 81161, 98335, 104015, 405805, 5762431, 28812155]

約数ペア:

[(1, 28812155), (5, 5762431), (71, 405805), (277, 104015), (293, 98335), (355, 81161), (1385, 20803), (1465, 19667)]