18922281

素因数分解:

$3^1\times 7^4\times {\mathrm{37}}^1\times {\mathrm{71}}^1$

素因数の和:139

約数の個数: 40

約数和(自身を含む): 30654144

約数和(自身を除く): 11731863

約数列:

[1, 3, 7, 21, 37, 49, 71, 111, 147, 213, 259, 343, 497, 777, 1029, 1491, 1813, 2401, 2627, 3479, 5439, 7203, 7881, 10437, 12691, 18389, 24353, 38073, 55167, 73059, 88837, 128723, 170471, 266511, 386169, 511413, 901061, 2703183, 6307427, 18922281]

約数ペア:

[(1, 18922281), (3, 6307427), (7, 2703183), (21, 901061), (37, 511413), (49, 386169), (71, 266511), (111, 170471), (147, 128723), (213, 88837), (259, 73059), (343, 55167), (497, 38073), (777, 24353), (1029, 18389), (1491, 12691), (1813, 10437), (2401, 7881), (2627, 7203), (3479, 5439)]