21094263

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{15319}}^1$

素因数の和:15348

約数の個数: 20

約数和(自身を含む): 33366960

約数和(自身を除く): 12272697

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 459, 1377, 15319, 45957, 137871, 260423, 413613, 781269, 1240839, 2343807, 7031421, 21094263]

約数ペア:

[(1, 21094263), (3, 7031421), (9, 2343807), (17, 1240839), (27, 781269), (51, 413613), (81, 260423), (153, 137871), (459, 45957), (1377, 15319)]