21003136

素因数分解:

$2^7\times 7^1\times {\mathrm{11}}^1\times {\mathrm{2131}}^1$

素因数の和:2163

約数の個数: 64

約数和(自身を含む): 52191360

約数和(自身を除く): 31188224

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 32, 44, 56, 64, 77, 88, 112, 128, 154, 176, 224, 308, 352, 448, 616, 704, 896, 1232, 1408, 2131, 2464, 4262, 4928, 8524, 9856, 14917, 17048, 23441, 29834, 34096, 46882, 59668, 68192, 93764, 119336, 136384, 164087, 187528, 238672, 272768, 328174, 375056, 477344, 656348, 750112, 954688, 1312696, 1500224, 1909376, 2625392, 3000448, 5250784, 10501568, 21003136]

約数ペア:

[(1, 21003136), (2, 10501568), (4, 5250784), (7, 3000448), (8, 2625392), (11, 1909376), (14, 1500224), (16, 1312696), (22, 954688), (28, 750112), (32, 656348), (44, 477344), (56, 375056), (64, 328174), (77, 272768), (88, 238672), (112, 187528), (128, 164087), (154, 136384), (176, 119336), (224, 93764), (308, 68192), (352, 59668), (448, 46882), (616, 34096), (704, 29834), (896, 23441), (1232, 17048), (1408, 14917), (2131, 9856), (2464, 8524), (4262, 4928)]