21002576

素因数分解:

$2^4\times 7^3\times {\mathrm{43}}^1\times {\mathrm{89}}^1$

素因数の和:161

約数の個数: 80

約数和(自身を含む): 49104000

約数和(自身を除く): 28101424

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 43, 49, 56, 86, 89, 98, 112, 172, 178, 196, 301, 343, 344, 356, 392, 602, 623, 686, 688, 712, 784, 1204, 1246, 1372, 1424, 2107, 2408, 2492, 2744, 3827, 4214, 4361, 4816, 4984, 5488, 7654, 8428, 8722, 9968, 14749, 15308, 16856, 17444, 26789, 29498, 30527, 30616, 33712, 34888, 53578, 58996, 61054, 61232, 69776, 107156, 117992, 122108, 187523, 214312, 235984, 244216, 375046, 428624, 488432, 750092, 1312661, 1500184, 2625322, 3000368, 5250644, 10501288, 21002576]

約数ペア:

[(1, 21002576), (2, 10501288), (4, 5250644), (7, 3000368), (8, 2625322), (14, 1500184), (16, 1312661), (28, 750092), (43, 488432), (49, 428624), (56, 375046), (86, 244216), (89, 235984), (98, 214312), (112, 187523), (172, 122108), (178, 117992), (196, 107156), (301, 69776), (343, 61232), (344, 61054), (356, 58996), (392, 53578), (602, 34888), (623, 33712), (686, 30616), (688, 30527), (712, 29498), (784, 26789), (1204, 17444), (1246, 16856), (1372, 15308), (1424, 14749), (2107, 9968), (2408, 8722), (2492, 8428), (2744, 7654), (3827, 5488), (4214, 4984), (4361, 4816)]