21427983

素因数分解:

$3^5\times {\mathrm{109}}^1\times {\mathrm{809}}^1$

素因数の和:933

約数の個数: 24

約数和(自身を含む): 32432400

約数和(自身を除く): 11004417

約数列:

[1, 3, 9, 27, 81, 109, 243, 327, 809, 981, 2427, 2943, 7281, 8829, 21843, 26487, 65529, 88181, 196587, 264543, 793629, 2380887, 7142661, 21427983]

約数ペア:

[(1, 21427983), (3, 7142661), (9, 2380887), (27, 793629), (81, 264543), (109, 196587), (243, 88181), (327, 65529), (809, 26487), (981, 21843), (2427, 8829), (2943, 7281)]