21805056

素因数分解:

$2^{11}\times 3^2\times 7^1\times {\mathrm{13}}^2$

素因数の和:61

約数の個数: 216

約数和(自身を含む): 77936040

約数和(自身を除く): 56130984

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 13, 14, 16, 18, 21, 24, 26, 28, 32, 36, 39, 42, 48, 52, 56, 63, 64, 72, 78, 84, 91, 96, 104, 112, 117, 126, 128, 144, 156, 168, 169, 182, 192, 208, 224, 234, 252, 256, 273, 288, 312, 336, 338, 364, 384, 416, 448, 468, 504, 507, 512, 546, 576, 624, 672, 676, 728, 768, 819, 832, 896, 936, 1008, 1014, 1024, 1092, 1152, 1183, 1248, 1344, 1352, 1456, 1521, 1536, 1638, 1664, 1792, 1872, 2016, 2028, 2048, 2184, 2304, 2366, 2496, 2688, 2704, 2912, 3042, 3072, 3276, 3328, 3549, 3584, 3744, 4032, 4056, 4368, 4608, 4732, 4992, 5376, 5408, 5824, 6084, 6144, 6552, 6656, 7098, 7168, 7488, 8064, 8112, 8736, 9216, 9464, 9984, 10647, 10752, 10816, 11648, 12168, 13104, 13312, 14196, 14336, 14976, 16128, 16224, 17472, 18432, 18928, 19968, 21294, 21504, 21632, 23296, 24336, 26208, 26624, 28392, 29952, 32256, 32448, 34944, 37856, 39936, 42588, 43008, 43264, 46592, 48672, 52416, 56784, 59904, 64512, 64896, 69888, 75712, 79872, 85176, 86528, 93184, 97344, 104832, 113568, 119808, 129024, 129792, 139776, 151424, 170352, 173056, 186368, 194688, 209664, 227136, 239616, 259584, 279552, 302848, 340704, 346112, 389376, 419328, 454272, 519168, 559104, 605696, 681408, 778752, 838656, 908544, 1038336, 1211392, 1362816, 1557504, 1677312, 1817088, 2422784, 2725632, 3115008, 3634176, 5451264, 7268352, 10902528, 21805056]

約数ペア:

[(1, 21805056), (2, 10902528), (3, 7268352), (4, 5451264), (6, 3634176), (7, 3115008), (8, 2725632), (9, 2422784), (12, 1817088), (13, 1677312), (14, 1557504), (16, 1362816), (18, 1211392), (21, 1038336), (24, 908544), (26, 838656), (28, 778752), (32, 681408), (36, 605696), (39, 559104), (42, 519168), (48, 454272), (52, 419328), (56, 389376), (63, 346112), (64, 340704), (72, 302848), (78, 279552), (84, 259584), (91, 239616), (96, 227136), (104, 209664), (112, 194688), (117, 186368), (126, 173056), (128, 170352), (144, 151424), (156, 139776), (168, 129792), (169, 129024), (182, 119808), (192, 113568), (208, 104832), (224, 97344), (234, 93184), (252, 86528), (256, 85176), (273, 79872), (288, 75712), (312, 69888), (336, 64896), (338, 64512), (364, 59904), (384, 56784), (416, 52416), (448, 48672), (468, 46592), (504, 43264), (507, 43008), (512, 42588), (546, 39936), (576, 37856), (624, 34944), (672, 32448), (676, 32256), (728, 29952), (768, 28392), (819, 26624), (832, 26208), (896, 24336), (936, 23296), (1008, 21632), (1014, 21504), (1024, 21294), (1092, 19968), (1152, 18928), (1183, 18432), (1248, 17472), (1344, 16224), (1352, 16128), (1456, 14976), (1521, 14336), (1536, 14196), (1638, 13312), (1664, 13104), (1792, 12168), (1872, 11648), (2016, 10816), (2028, 10752), (2048, 10647), (2184, 9984), (2304, 9464), (2366, 9216), (2496, 8736), (2688, 8112), (2704, 8064), (2912, 7488), (3042, 7168), (3072, 7098), (3276, 6656), (3328, 6552), (3549, 6144), (3584, 6084), (3744, 5824), (4032, 5408), (4056, 5376), (4368, 4992), (4608, 4732)]