28757127

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{72073}}^1$

素因数の和:72102

約数の個数: 16

約数和(自身を含む): 46127360

約数和(自身を除く): 17370233

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 72073, 216219, 504511, 1369387, 1513533, 4108161, 9585709, 28757127]

約数ペア:

[(1, 28757127), (3, 9585709), (7, 4108161), (19, 1513533), (21, 1369387), (57, 504511), (133, 216219), (399, 72073)]