81402741

素因数分解:

$3^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{151}}^1\times {\mathrm{199}}^1$

素因数の和:406

約数の個数: 48

約数和(自身を含む): 139110400

約数和(自身を除く): 57707659

約数列:

[1, 3, 7, 9, 21, 43, 63, 129, 151, 199, 301, 387, 453, 597, 903, 1057, 1359, 1393, 1791, 2709, 3171, 4179, 6493, 8557, 9513, 12537, 19479, 25671, 30049, 45451, 58437, 59899, 77013, 90147, 136353, 179697, 210343, 270441, 409059, 539091, 631029, 1292107, 1893087, 3876321, 9044749, 11628963, 27134247, 81402741]

約数ペア:

[(1, 81402741), (3, 27134247), (7, 11628963), (9, 9044749), (21, 3876321), (43, 1893087), (63, 1292107), (129, 631029), (151, 539091), (199, 409059), (301, 270441), (387, 210343), (453, 179697), (597, 136353), (903, 90147), (1057, 77013), (1359, 59899), (1393, 58437), (1791, 45451), (2709, 30049), (3171, 25671), (4179, 19479), (6493, 12537), (8557, 9513)]