81082071

素因数分解:

$3^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{18127}}^1$

素因数の和:18211

約数の個数: 24

約数和(自身を含む): 135742464

約数和(自身を除く): 54660393

約数列:

[1, 3, 7, 9, 21, 63, 71, 213, 497, 639, 1491, 4473, 18127, 54381, 126889, 163143, 380667, 1142001, 1287017, 3861051, 9009119, 11583153, 27027357, 81082071]

約数ペア:

[(1, 81082071), (3, 27027357), (7, 11583153), (9, 9009119), (21, 3861051), (63, 1287017), (71, 1142001), (213, 380667), (497, 163143), (639, 126889), (1491, 54381), (4473, 18127)]