21491008

素因数分解:

$2^6\times 7^3\times {\mathrm{11}}^1\times {\mathrm{89}}^1$

素因数の和:133

約数の個数: 112

約数和(自身を含む): 54864000

約数和(自身を除く): 33372992

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 32, 44, 49, 56, 64, 77, 88, 89, 98, 112, 154, 176, 178, 196, 224, 308, 343, 352, 356, 392, 448, 539, 616, 623, 686, 704, 712, 784, 979, 1078, 1232, 1246, 1372, 1424, 1568, 1958, 2156, 2464, 2492, 2744, 2848, 3136, 3773, 3916, 4312, 4361, 4928, 4984, 5488, 5696, 6853, 7546, 7832, 8624, 8722, 9968, 10976, 13706, 15092, 15664, 17248, 17444, 19936, 21952, 27412, 30184, 30527, 31328, 34496, 34888, 39872, 47971, 54824, 60368, 61054, 62656, 69776, 95942, 109648, 120736, 122108, 139552, 191884, 219296, 241472, 244216, 279104, 335797, 383768, 438592, 488432, 671594, 767536, 976864, 1343188, 1535072, 1953728, 2686376, 3070144, 5372752, 10745504, 21491008]

約数ペア:

[(1, 21491008), (2, 10745504), (4, 5372752), (7, 3070144), (8, 2686376), (11, 1953728), (14, 1535072), (16, 1343188), (22, 976864), (28, 767536), (32, 671594), (44, 488432), (49, 438592), (56, 383768), (64, 335797), (77, 279104), (88, 244216), (89, 241472), (98, 219296), (112, 191884), (154, 139552), (176, 122108), (178, 120736), (196, 109648), (224, 95942), (308, 69776), (343, 62656), (352, 61054), (356, 60368), (392, 54824), (448, 47971), (539, 39872), (616, 34888), (623, 34496), (686, 31328), (704, 30527), (712, 30184), (784, 27412), (979, 21952), (1078, 19936), (1232, 17444), (1246, 17248), (1372, 15664), (1424, 15092), (1568, 13706), (1958, 10976), (2156, 9968), (2464, 8722), (2492, 8624), (2744, 7832), (2848, 7546), (3136, 6853), (3773, 5696), (3916, 5488), (4312, 4984), (4361, 4928)]