21680848

素因数分解:

$2^4\times 7^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{193}}^1$

素因数の和:284

約数の個数: 80

約数和(自身を含む): 51960960

約数和(自身を除く): 30280112

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 28, 34, 56, 59, 68, 112, 118, 119, 136, 193, 236, 238, 272, 386, 413, 472, 476, 772, 826, 944, 952, 1003, 1351, 1544, 1652, 1904, 2006, 2702, 3088, 3281, 3304, 4012, 5404, 6562, 6608, 7021, 8024, 10808, 11387, 13124, 14042, 16048, 21616, 22774, 22967, 26248, 28084, 45548, 45934, 52496, 56168, 79709, 91096, 91868, 112336, 159418, 182192, 183736, 193579, 318836, 367472, 387158, 637672, 774316, 1275344, 1355053, 1548632, 2710106, 3097264, 5420212, 10840424, 21680848]

約数ペア:

[(1, 21680848), (2, 10840424), (4, 5420212), (7, 3097264), (8, 2710106), (14, 1548632), (16, 1355053), (17, 1275344), (28, 774316), (34, 637672), (56, 387158), (59, 367472), (68, 318836), (112, 193579), (118, 183736), (119, 182192), (136, 159418), (193, 112336), (236, 91868), (238, 91096), (272, 79709), (386, 56168), (413, 52496), (472, 45934), (476, 45548), (772, 28084), (826, 26248), (944, 22967), (952, 22774), (1003, 21616), (1351, 16048), (1544, 14042), (1652, 13124), (1904, 11387), (2006, 10808), (2702, 8024), (3088, 7021), (3281, 6608), (3304, 6562), (4012, 5404)]