21976416

素因数分解:

$2^5\times 3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{991}}^1$

素因数の和:1025

約数の個数: 144

約数和(自身を含む): 77995008

約数和(自身を除く): 56018592

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 11, 12, 14, 16, 18, 21, 22, 24, 28, 32, 33, 36, 42, 44, 48, 56, 63, 66, 72, 77, 84, 88, 96, 99, 112, 126, 132, 144, 154, 168, 176, 198, 224, 231, 252, 264, 288, 308, 336, 352, 396, 462, 504, 528, 616, 672, 693, 792, 924, 991, 1008, 1056, 1232, 1386, 1584, 1848, 1982, 2016, 2464, 2772, 2973, 3168, 3696, 3964, 5544, 5946, 6937, 7392, 7928, 8919, 10901, 11088, 11892, 13874, 15856, 17838, 20811, 21802, 22176, 23784, 27748, 31712, 32703, 35676, 41622, 43604, 47568, 55496, 62433, 65406, 71352, 76307, 83244, 87208, 95136, 98109, 110992, 124866, 130812, 142704, 152614, 166488, 174416, 196218, 221984, 228921, 249732, 261624, 285408, 305228, 332976, 348832, 392436, 457842, 499464, 523248, 610456, 665952, 686763, 784872, 915684, 998928, 1046496, 1220912, 1373526, 1569744, 1831368, 1997856, 2441824, 2747052, 3139488, 3662736, 5494104, 7325472, 10988208, 21976416]

約数ペア:

[(1, 21976416), (2, 10988208), (3, 7325472), (4, 5494104), (6, 3662736), (7, 3139488), (8, 2747052), (9, 2441824), (11, 1997856), (12, 1831368), (14, 1569744), (16, 1373526), (18, 1220912), (21, 1046496), (22, 998928), (24, 915684), (28, 784872), (32, 686763), (33, 665952), (36, 610456), (42, 523248), (44, 499464), (48, 457842), (56, 392436), (63, 348832), (66, 332976), (72, 305228), (77, 285408), (84, 261624), (88, 249732), (96, 228921), (99, 221984), (112, 196218), (126, 174416), (132, 166488), (144, 152614), (154, 142704), (168, 130812), (176, 124866), (198, 110992), (224, 98109), (231, 95136), (252, 87208), (264, 83244), (288, 76307), (308, 71352), (336, 65406), (352, 62433), (396, 55496), (462, 47568), (504, 43604), (528, 41622), (616, 35676), (672, 32703), (693, 31712), (792, 27748), (924, 23784), (991, 22176), (1008, 21802), (1056, 20811), (1232, 17838), (1386, 15856), (1584, 13874), (1848, 11892), (1982, 11088), (2016, 10901), (2464, 8919), (2772, 7928), (2973, 7392), (3168, 6937), (3696, 5946), (3964, 5544)]