20264678

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1$

素因数の和:165

約数の個数: 64

約数和(自身を含む): 39398400

約数和(自身を除く): 19133722

約数列:

[1, 2, 7, 14, 19, 29, 37, 38, 58, 71, 74, 133, 142, 203, 259, 266, 406, 497, 518, 551, 703, 994, 1073, 1102, 1349, 1406, 2059, 2146, 2627, 2698, 3857, 4118, 4921, 5254, 7511, 7714, 9443, 9842, 14413, 15022, 18389, 18886, 20387, 28826, 36778, 39121, 40774, 49913, 76183, 78242, 99826, 142709, 152366, 273847, 285418, 349391, 533281, 547694, 698782, 1066562, 1447477, 2894954, 10132339, 20264678]

約数ペア:

[(1, 20264678), (2, 10132339), (7, 2894954), (14, 1447477), (19, 1066562), (29, 698782), (37, 547694), (38, 533281), (58, 349391), (71, 285418), (74, 273847), (133, 152366), (142, 142709), (203, 99826), (259, 78242), (266, 76183), (406, 49913), (497, 40774), (518, 39121), (551, 36778), (703, 28826), (994, 20387), (1073, 18886), (1102, 18389), (1349, 15022), (1406, 14413), (2059, 9842), (2146, 9443), (2627, 7714), (2698, 7511), (3857, 5254), (4118, 4921)]