128780498545

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{439}}^1\times {\mathrm{1364417}}^1$

素因数の和:1364904

約数の個数: 16

約数和(自身を含む): 158490794880

約数和(自身を除く): 29710296335

約数列:

[1, 5, 43, 215, 439, 2195, 18877, 94385, 1364417, 6822085, 58669931, 293349655, 598979063, 2994895315, 25756099709, 128780498545]

約数ペア:

[(1, 128780498545), (5, 25756099709), (43, 2994895315), (215, 598979063), (439, 293349655), (2195, 58669931), (18877, 6822085), (94385, 1364417)]