81538254

素因数分解:

$2^1\times 3^2\times 7^2\times {\mathrm{193}}^1\times {\mathrm{479}}^1$

素因数の和:694

約数の個数: 72

約数和(自身を含む): 207005760

約数和(自身を除く): 125467506

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 49, 63, 98, 126, 147, 193, 294, 386, 441, 479, 579, 882, 958, 1158, 1351, 1437, 1737, 2702, 2874, 3353, 3474, 4053, 4311, 6706, 8106, 8622, 9457, 10059, 12159, 18914, 20118, 23471, 24318, 28371, 30177, 46942, 56742, 60354, 70413, 85113, 92447, 140826, 170226, 184894, 211239, 277341, 422478, 554682, 647129, 832023, 1294258, 1664046, 1941387, 3882774, 4529903, 5824161, 9059806, 11648322, 13589709, 27179418, 40769127, 81538254]

約数ペア:

[(1, 81538254), (2, 40769127), (3, 27179418), (6, 13589709), (7, 11648322), (9, 9059806), (14, 5824161), (18, 4529903), (21, 3882774), (42, 1941387), (49, 1664046), (63, 1294258), (98, 832023), (126, 647129), (147, 554682), (193, 422478), (294, 277341), (386, 211239), (441, 184894), (479, 170226), (579, 140826), (882, 92447), (958, 85113), (1158, 70413), (1351, 60354), (1437, 56742), (1737, 46942), (2702, 30177), (2874, 28371), (3353, 24318), (3474, 23471), (4053, 20118), (4311, 18914), (6706, 12159), (8106, 10059), (8622, 9457)]