21356896

素因数分解:

$2^5\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{83}}^1$

素因数の和:164

約数の個数: 96

約数和(自身を含む): 50295168

約数和(自身を除く): 28938272

約数列:

[1, 2, 4, 8, 11, 16, 17, 22, 32, 34, 43, 44, 68, 83, 86, 88, 136, 166, 172, 176, 187, 272, 332, 344, 352, 374, 473, 544, 664, 688, 731, 748, 913, 946, 1328, 1376, 1411, 1462, 1496, 1826, 1892, 2656, 2822, 2924, 2992, 3569, 3652, 3784, 5644, 5848, 5984, 7138, 7304, 7568, 8041, 11288, 11696, 14276, 14608, 15136, 15521, 16082, 22576, 23392, 28552, 29216, 31042, 32164, 39259, 45152, 57104, 60673, 62084, 64328, 78518, 114208, 121346, 124168, 128656, 157036, 242692, 248336, 257312, 314072, 485384, 496672, 628144, 667403, 970768, 1256288, 1334806, 1941536, 2669612, 5339224, 10678448, 21356896]

約数ペア:

[(1, 21356896), (2, 10678448), (4, 5339224), (8, 2669612), (11, 1941536), (16, 1334806), (17, 1256288), (22, 970768), (32, 667403), (34, 628144), (43, 496672), (44, 485384), (68, 314072), (83, 257312), (86, 248336), (88, 242692), (136, 157036), (166, 128656), (172, 124168), (176, 121346), (187, 114208), (272, 78518), (332, 64328), (344, 62084), (352, 60673), (374, 57104), (473, 45152), (544, 39259), (664, 32164), (688, 31042), (731, 29216), (748, 28552), (913, 23392), (946, 22576), (1328, 16082), (1376, 15521), (1411, 15136), (1462, 14608), (1496, 14276), (1826, 11696), (1892, 11288), (2656, 8041), (2822, 7568), (2924, 7304), (2992, 7138), (3569, 5984), (3652, 5848), (3784, 5644)]