20914768

素因数分解:

$2^4\times 7^3\times {\mathrm{37}}^1\times {\mathrm{103}}^1$

素因数の和:169

約数の個数: 80

約数和(自身を含む): 49004800

約数和(自身を除く): 28090032

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 37, 49, 56, 74, 98, 103, 112, 148, 196, 206, 259, 296, 343, 392, 412, 518, 592, 686, 721, 784, 824, 1036, 1372, 1442, 1648, 1813, 2072, 2744, 2884, 3626, 3811, 4144, 5047, 5488, 5768, 7252, 7622, 10094, 11536, 12691, 14504, 15244, 20188, 25382, 26677, 29008, 30488, 35329, 40376, 50764, 53354, 60976, 70658, 80752, 101528, 106708, 141316, 186739, 203056, 213416, 282632, 373478, 426832, 565264, 746956, 1307173, 1493912, 2614346, 2987824, 5228692, 10457384, 20914768]

約数ペア:

[(1, 20914768), (2, 10457384), (4, 5228692), (7, 2987824), (8, 2614346), (14, 1493912), (16, 1307173), (28, 746956), (37, 565264), (49, 426832), (56, 373478), (74, 282632), (98, 213416), (103, 203056), (112, 186739), (148, 141316), (196, 106708), (206, 101528), (259, 80752), (296, 70658), (343, 60976), (392, 53354), (412, 50764), (518, 40376), (592, 35329), (686, 30488), (721, 29008), (784, 26677), (824, 25382), (1036, 20188), (1372, 15244), (1442, 14504), (1648, 12691), (1813, 11536), (2072, 10094), (2744, 7622), (2884, 7252), (3626, 5768), (3811, 5488), (4144, 5047)]