20430256

素因数分解:

$2^4\times 7^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{103}}^1$

素因数の和:159

約数の個数: 120

約数和(自身を含む): 52925184

約数和(自身を除く): 32494928

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 23, 28, 44, 46, 49, 56, 77, 88, 92, 98, 103, 112, 154, 161, 176, 184, 196, 206, 253, 308, 322, 368, 392, 412, 506, 539, 616, 644, 721, 784, 824, 1012, 1078, 1127, 1133, 1232, 1288, 1442, 1648, 1771, 2024, 2156, 2254, 2266, 2369, 2576, 2884, 3542, 4048, 4312, 4508, 4532, 4738, 5047, 5768, 7084, 7931, 8624, 9016, 9064, 9476, 10094, 11536, 12397, 14168, 15862, 16583, 18032, 18128, 18952, 20188, 24794, 26059, 28336, 31724, 33166, 37904, 40376, 49588, 52118, 55517, 63448, 66332, 80752, 99176, 104236, 111034, 116081, 126896, 132664, 182413, 198352, 208472, 222068, 232162, 265328, 364826, 416944, 444136, 464324, 729652, 888272, 928648, 1276891, 1459304, 1857296, 2553782, 2918608, 5107564, 10215128, 20430256]

約数ペア:

[(1, 20430256), (2, 10215128), (4, 5107564), (7, 2918608), (8, 2553782), (11, 1857296), (14, 1459304), (16, 1276891), (22, 928648), (23, 888272), (28, 729652), (44, 464324), (46, 444136), (49, 416944), (56, 364826), (77, 265328), (88, 232162), (92, 222068), (98, 208472), (103, 198352), (112, 182413), (154, 132664), (161, 126896), (176, 116081), (184, 111034), (196, 104236), (206, 99176), (253, 80752), (308, 66332), (322, 63448), (368, 55517), (392, 52118), (412, 49588), (506, 40376), (539, 37904), (616, 33166), (644, 31724), (721, 28336), (784, 26059), (824, 24794), (1012, 20188), (1078, 18952), (1127, 18128), (1133, 18032), (1232, 16583), (1288, 15862), (1442, 14168), (1648, 12397), (1771, 11536), (2024, 10094), (2156, 9476), (2254, 9064), (2266, 9016), (2369, 8624), (2576, 7931), (2884, 7084), (3542, 5768), (4048, 5047), (4312, 4738), (4508, 4532)]