21560784

素因数分解:

$2^4\times 3^1\times 7^2\times {\mathrm{89}}^1\times {\mathrm{103}}^1$

素因数の和:217

約数の個数: 120

約数和(自身を含む): 66156480

約数和(自身を除く): 44595696

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 42, 48, 49, 56, 84, 89, 98, 103, 112, 147, 168, 178, 196, 206, 267, 294, 309, 336, 356, 392, 412, 534, 588, 618, 623, 712, 721, 784, 824, 1068, 1176, 1236, 1246, 1424, 1442, 1648, 1869, 2136, 2163, 2352, 2472, 2492, 2884, 3738, 4272, 4326, 4361, 4944, 4984, 5047, 5768, 7476, 8652, 8722, 9167, 9968, 10094, 11536, 13083, 14952, 15141, 17304, 17444, 18334, 20188, 26166, 27501, 29904, 30282, 34608, 34888, 36668, 40376, 52332, 55002, 60564, 64169, 69776, 73336, 80752, 104664, 110004, 121128, 128338, 146672, 192507, 209328, 220008, 242256, 256676, 385014, 440016, 449183, 513352, 770028, 898366, 1026704, 1347549, 1540056, 1796732, 2695098, 3080112, 3593464, 5390196, 7186928, 10780392, 21560784]

約数ペア:

[(1, 21560784), (2, 10780392), (3, 7186928), (4, 5390196), (6, 3593464), (7, 3080112), (8, 2695098), (12, 1796732), (14, 1540056), (16, 1347549), (21, 1026704), (24, 898366), (28, 770028), (42, 513352), (48, 449183), (49, 440016), (56, 385014), (84, 256676), (89, 242256), (98, 220008), (103, 209328), (112, 192507), (147, 146672), (168, 128338), (178, 121128), (196, 110004), (206, 104664), (267, 80752), (294, 73336), (309, 69776), (336, 64169), (356, 60564), (392, 55002), (412, 52332), (534, 40376), (588, 36668), (618, 34888), (623, 34608), (712, 30282), (721, 29904), (784, 27501), (824, 26166), (1068, 20188), (1176, 18334), (1236, 17444), (1246, 17304), (1424, 15141), (1442, 14952), (1648, 13083), (1869, 11536), (2136, 10094), (2163, 9968), (2352, 9167), (2472, 8722), (2492, 8652), (2884, 7476), (3738, 5768), (4272, 5047), (4326, 4984), (4361, 4944)]