728045289

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{49537}}^1$

素因数の和:49637

約数の個数: 24

約数和(自身を含む): 1112821632

約数和(自身を除く): 384776343

約数列:

[1, 3, 9, 23, 69, 71, 207, 213, 639, 1633, 4899, 14697, 49537, 148611, 445833, 1139351, 3418053, 3517127, 10254159, 10551381, 31654143, 80893921, 242681763, 728045289]

約数ペア:

[(1, 728045289), (3, 242681763), (9, 80893921), (23, 31654143), (69, 10551381), (71, 10254159), (207, 3517127), (213, 3418053), (639, 1139351), (1633, 445833), (4899, 148611), (14697, 49537)]