861239.0000000

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1$

素因数の和:138

約数の個数: 48

約数和(自身を含む): 8733312

約数和(自身を除く): 3713115

約数列:

[1, 3, 7, 13, 21, 37, 39, 49, 71, 91, 111, 147, 213, 259, 273, 481, 497, 637, 777, 923, 1443, 1491, 1813, 1911, 2627, 2769, 3367, 3479, 5439, 6461, 7881, 10101, 10437, 18389, 19383, 23569, 34151, 45227, 55167, 70707, 102453, 128723, 135681, 239057, 386169, 717171, 1673399, 5020197]

約数ペア:

[(1, 5020197), (3, 1673399), (7, 717171), (13, 386169), (21, 239057), (37, 135681), (39, 128723), (49, 102453), (71, 70707), (91, 55167), (111, 45227), (147, 34151), (213, 23569), (259, 19383), (273, 18389), (481, 10437), (497, 10101), (637, 7881), (777, 6461), (923, 5439), (1443, 3479), (1491, 3367), (1813, 2769), (1911, 2627)]