21155616

素因数分解:

$2^5\times 3^2\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{149}}^1$

素因数の和:211

約数の個数: 144

約数和(自身を含む): 66339000

約数和(自身を除く): 45183384

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 17, 18, 24, 29, 32, 34, 36, 48, 51, 58, 68, 72, 87, 96, 102, 116, 136, 144, 149, 153, 174, 204, 232, 261, 272, 288, 298, 306, 348, 408, 447, 464, 493, 522, 544, 596, 612, 696, 816, 894, 928, 986, 1044, 1192, 1224, 1341, 1392, 1479, 1632, 1788, 1972, 2088, 2384, 2448, 2533, 2682, 2784, 2958, 3576, 3944, 4176, 4321, 4437, 4768, 4896, 5066, 5364, 5916, 7152, 7599, 7888, 8352, 8642, 8874, 10132, 10728, 11832, 12963, 14304, 15198, 15776, 17284, 17748, 20264, 21456, 22797, 23664, 25926, 30396, 34568, 35496, 38889, 40528, 42912, 45594, 47328, 51852, 60792, 69136, 70992, 73457, 77778, 81056, 91188, 103704, 121584, 138272, 141984, 146914, 155556, 182376, 207408, 220371, 243168, 293828, 311112, 364752, 414816, 440742, 587656, 622224, 661113, 729504, 881484, 1175312, 1244448, 1322226, 1762968, 2350624, 2644452, 3525936, 5288904, 7051872, 10577808, 21155616]

約数ペア:

[(1, 21155616), (2, 10577808), (3, 7051872), (4, 5288904), (6, 3525936), (8, 2644452), (9, 2350624), (12, 1762968), (16, 1322226), (17, 1244448), (18, 1175312), (24, 881484), (29, 729504), (32, 661113), (34, 622224), (36, 587656), (48, 440742), (51, 414816), (58, 364752), (68, 311112), (72, 293828), (87, 243168), (96, 220371), (102, 207408), (116, 182376), (136, 155556), (144, 146914), (149, 141984), (153, 138272), (174, 121584), (204, 103704), (232, 91188), (261, 81056), (272, 77778), (288, 73457), (298, 70992), (306, 69136), (348, 60792), (408, 51852), (447, 47328), (464, 45594), (493, 42912), (522, 40528), (544, 38889), (596, 35496), (612, 34568), (696, 30396), (816, 25926), (894, 23664), (928, 22797), (986, 21456), (1044, 20264), (1192, 17748), (1224, 17284), (1341, 15776), (1392, 15198), (1479, 14304), (1632, 12963), (1788, 11832), (1972, 10728), (2088, 10132), (2384, 8874), (2448, 8642), (2533, 8352), (2682, 7888), (2784, 7599), (2958, 7152), (3576, 5916), (3944, 5364), (4176, 5066), (4321, 4896), (4437, 4768)]