21325216

素因数分解:

$2^5\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{1289}}^1$

素因数の和:1357

約数の個数: 48

約数和(自身を含む): 46811520

約数和(自身を除く): 25486304

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 47, 88, 94, 176, 188, 352, 376, 517, 752, 1034, 1289, 1504, 2068, 2578, 4136, 5156, 8272, 10312, 14179, 16544, 20624, 28358, 41248, 56716, 60583, 113432, 121166, 226864, 242332, 453728, 484664, 666413, 969328, 1332826, 1938656, 2665652, 5331304, 10662608, 21325216]

約数ペア:

[(1, 21325216), (2, 10662608), (4, 5331304), (8, 2665652), (11, 1938656), (16, 1332826), (22, 969328), (32, 666413), (44, 484664), (47, 453728), (88, 242332), (94, 226864), (176, 121166), (188, 113432), (352, 60583), (376, 56716), (517, 41248), (752, 28358), (1034, 20624), (1289, 16544), (1504, 14179), (2068, 10312), (2578, 8272), (4136, 5156)]