20812372

素因数分解:

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

素因数の和:149

約数の個数: 72

約数和(自身を含む): 46085760

約数和(自身を除く): 25273388

約数列:

[1, 2, 4, 7, 14, 19, 28, 29, 38, 58, 71, 76, 116, 133, 142, 203, 266, 284, 361, 406, 497, 532, 551, 722, 812, 994, 1102, 1349, 1444, 1988, 2059, 2204, 2527, 2698, 3857, 4118, 5054, 5396, 7714, 8236, 9443, 10108, 10469, 14413, 15428, 18886, 20938, 25631, 28826, 37772, 39121, 41876, 51262, 57652, 73283, 78242, 102524, 146566, 156484, 179417, 273847, 293132, 358834, 547694, 717668, 743299, 1095388, 1486598, 2973196, 5203093, 10406186, 20812372]

約数ペア:

[(1, 20812372), (2, 10406186), (4, 5203093), (7, 2973196), (14, 1486598), (19, 1095388), (28, 743299), (29, 717668), (38, 547694), (58, 358834), (71, 293132), (76, 273847), (116, 179417), (133, 156484), (142, 146566), (203, 102524), (266, 78242), (284, 73283), (361, 57652), (406, 51262), (497, 41876), (532, 39121), (551, 37772), (722, 28826), (812, 25631), (994, 20938), (1102, 18886), (1349, 15428), (1444, 14413), (1988, 10469), (2059, 10108), (2204, 9443), (2527, 8236), (2698, 7714), (3857, 5396), (4118, 5054)]