21539616

素因数分解:

$2^5\times 3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{241}}^1$

素因数の和:287

約数の個数: 144

約数和(自身を含む): 69521760

約数和(自身を除く): 47982144

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 19, 21, 24, 28, 32, 38, 42, 48, 49, 56, 57, 76, 84, 96, 98, 112, 114, 133, 147, 152, 168, 196, 224, 228, 241, 266, 294, 304, 336, 392, 399, 456, 482, 532, 588, 608, 672, 723, 784, 798, 912, 931, 964, 1064, 1176, 1446, 1568, 1596, 1687, 1824, 1862, 1928, 2128, 2352, 2793, 2892, 3192, 3374, 3724, 3856, 4256, 4579, 4704, 5061, 5586, 5784, 6384, 6748, 7448, 7712, 9158, 10122, 11172, 11568, 11809, 12768, 13496, 13737, 14896, 18316, 20244, 22344, 23136, 23618, 26992, 27474, 29792, 32053, 35427, 36632, 40488, 44688, 47236, 53984, 54948, 64106, 70854, 73264, 80976, 89376, 94472, 96159, 109896, 128212, 141708, 146528, 161952, 188944, 192318, 219792, 224371, 256424, 283416, 377888, 384636, 439584, 448742, 512848, 566832, 673113, 769272, 897484, 1025696, 1133664, 1346226, 1538544, 1794968, 2692452, 3077088, 3589936, 5384904, 7179872, 10769808, 21539616]

約数ペア:

[(1, 21539616), (2, 10769808), (3, 7179872), (4, 5384904), (6, 3589936), (7, 3077088), (8, 2692452), (12, 1794968), (14, 1538544), (16, 1346226), (19, 1133664), (21, 1025696), (24, 897484), (28, 769272), (32, 673113), (38, 566832), (42, 512848), (48, 448742), (49, 439584), (56, 384636), (57, 377888), (76, 283416), (84, 256424), (96, 224371), (98, 219792), (112, 192318), (114, 188944), (133, 161952), (147, 146528), (152, 141708), (168, 128212), (196, 109896), (224, 96159), (228, 94472), (241, 89376), (266, 80976), (294, 73264), (304, 70854), (336, 64106), (392, 54948), (399, 53984), (456, 47236), (482, 44688), (532, 40488), (588, 36632), (608, 35427), (672, 32053), (723, 29792), (784, 27474), (798, 26992), (912, 23618), (931, 23136), (964, 22344), (1064, 20244), (1176, 18316), (1446, 14896), (1568, 13737), (1596, 13496), (1687, 12768), (1824, 11809), (1862, 11568), (1928, 11172), (2128, 10122), (2352, 9158), (2793, 7712), (2892, 7448), (3192, 6748), (3374, 6384), (3724, 5784), (3856, 5586), (4256, 5061), (4579, 4704)]