81865728

素因数分解:

$2^{10}\times 3^5\times 7^1\times {\mathrm{47}}^1$

素因数の和:89

約数の個数: 264

約数和(自身を含む): 286121472

約数和(自身を除く): 204255744

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 27, 28, 32, 36, 42, 47, 48, 54, 56, 63, 64, 72, 81, 84, 94, 96, 108, 112, 126, 128, 141, 144, 162, 168, 188, 189, 192, 216, 224, 243, 252, 256, 282, 288, 324, 329, 336, 376, 378, 384, 423, 432, 448, 486, 504, 512, 564, 567, 576, 648, 658, 672, 752, 756, 768, 846, 864, 896, 972, 987, 1008, 1024, 1128, 1134, 1152, 1269, 1296, 1316, 1344, 1504, 1512, 1536, 1692, 1701, 1728, 1792, 1944, 1974, 2016, 2256, 2268, 2304, 2538, 2592, 2632, 2688, 2961, 3008, 3024, 3072, 3384, 3402, 3456, 3584, 3807, 3888, 3948, 4032, 4512, 4536, 4608, 5076, 5184, 5264, 5376, 5922, 6016, 6048, 6768, 6804, 6912, 7168, 7614, 7776, 7896, 8064, 8883, 9024, 9072, 9216, 10152, 10368, 10528, 10752, 11421, 11844, 12032, 12096, 13536, 13608, 13824, 15228, 15552, 15792, 16128, 17766, 18048, 18144, 20304, 20736, 21056, 21504, 22842, 23688, 24064, 24192, 26649, 27072, 27216, 27648, 30456, 31104, 31584, 32256, 35532, 36096, 36288, 40608, 41472, 42112, 45684, 47376, 48128, 48384, 53298, 54144, 54432, 60912, 62208, 63168, 64512, 71064, 72192, 72576, 79947, 81216, 82944, 84224, 91368, 94752, 96768, 106596, 108288, 108864, 121824, 124416, 126336, 142128, 144384, 145152, 159894, 162432, 168448, 182736, 189504, 193536, 213192, 216576, 217728, 243648, 248832, 252672, 284256, 290304, 319788, 324864, 336896, 365472, 379008, 426384, 433152, 435456, 487296, 505344, 568512, 580608, 639576, 649728, 730944, 758016, 852768, 870912, 974592, 1010688, 1137024, 1279152, 1299456, 1461888, 1516032, 1705536, 1741824, 1949184, 2274048, 2558304, 2923776, 3032064, 3411072, 3898368, 4548096, 5116608, 5847552, 6822144, 9096192, 10233216, 11695104, 13644288, 20466432, 27288576, 40932864, 81865728]

約数ペア:

[(1, 81865728), (2, 40932864), (3, 27288576), (4, 20466432), (6, 13644288), (7, 11695104), (8, 10233216), (9, 9096192), (12, 6822144), (14, 5847552), (16, 5116608), (18, 4548096), (21, 3898368), (24, 3411072), (27, 3032064), (28, 2923776), (32, 2558304), (36, 2274048), (42, 1949184), (47, 1741824), (48, 1705536), (54, 1516032), (56, 1461888), (63, 1299456), (64, 1279152), (72, 1137024), (81, 1010688), (84, 974592), (94, 870912), (96, 852768), (108, 758016), (112, 730944), (126, 649728), (128, 639576), (141, 580608), (144, 568512), (162, 505344), (168, 487296), (188, 435456), (189, 433152), (192, 426384), (216, 379008), (224, 365472), (243, 336896), (252, 324864), (256, 319788), (282, 290304), (288, 284256), (324, 252672), (329, 248832), (336, 243648), (376, 217728), (378, 216576), (384, 213192), (423, 193536), (432, 189504), (448, 182736), (486, 168448), (504, 162432), (512, 159894), (564, 145152), (567, 144384), (576, 142128), (648, 126336), (658, 124416), (672, 121824), (752, 108864), (756, 108288), (768, 106596), (846, 96768), (864, 94752), (896, 91368), (972, 84224), (987, 82944), (1008, 81216), (1024, 79947), (1128, 72576), (1134, 72192), (1152, 71064), (1269, 64512), (1296, 63168), (1316, 62208), (1344, 60912), (1504, 54432), (1512, 54144), (1536, 53298), (1692, 48384), (1701, 48128), (1728, 47376), (1792, 45684), (1944, 42112), (1974, 41472), (2016, 40608), (2256, 36288), (2268, 36096), (2304, 35532), (2538, 32256), (2592, 31584), (2632, 31104), (2688, 30456), (2961, 27648), (3008, 27216), (3024, 27072), (3072, 26649), (3384, 24192), (3402, 24064), (3456, 23688), (3584, 22842), (3807, 21504), (3888, 21056), (3948, 20736), (4032, 20304), (4512, 18144), (4536, 18048), (4608, 17766), (5076, 16128), (5184, 15792), (5264, 15552), (5376, 15228), (5922, 13824), (6016, 13608), (6048, 13536), (6768, 12096), (6804, 12032), (6912, 11844), (7168, 11421), (7614, 10752), (7776, 10528), (7896, 10368), (8064, 10152), (8883, 9216), (9024, 9072)]