21989711871

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{47907869}}^1$

素因数の和:47907895

約数の個数: 16

約数和(自身を含む): 34493666400

約数和(自身を除く): 12503954529

約数列:

[1, 3, 9, 17, 27, 51, 153, 459, 47907869, 143723607, 431170821, 814433773, 1293512463, 2443301319, 7329903957, 21989711871]

約数ペア:

[(1, 21989711871), (3, 7329903957), (9, 2443301319), (17, 1293512463), (27, 814433773), (51, 431170821), (153, 143723607), (459, 47907869)]