20390656

素因数分解:

$2^8\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{557}}^1$

素因数の和:597

約数の個数: 72

約数和(自身を含む): 47903184

約数和(自身を除く): 27512528

約数列:

[1, 2, 4, 8, 11, 13, 16, 22, 26, 32, 44, 52, 64, 88, 104, 128, 143, 176, 208, 256, 286, 352, 416, 557, 572, 704, 832, 1114, 1144, 1408, 1664, 2228, 2288, 2816, 3328, 4456, 4576, 6127, 7241, 8912, 9152, 12254, 14482, 17824, 18304, 24508, 28964, 35648, 36608, 49016, 57928, 71296, 79651, 98032, 115856, 142592, 159302, 196064, 231712, 318604, 392128, 463424, 637208, 784256, 926848, 1274416, 1568512, 1853696, 2548832, 5097664, 10195328, 20390656]

約数ペア:

[(1, 20390656), (2, 10195328), (4, 5097664), (8, 2548832), (11, 1853696), (13, 1568512), (16, 1274416), (22, 926848), (26, 784256), (32, 637208), (44, 463424), (52, 392128), (64, 318604), (88, 231712), (104, 196064), (128, 159302), (143, 142592), (176, 115856), (208, 98032), (256, 79651), (286, 71296), (352, 57928), (416, 49016), (557, 36608), (572, 35648), (704, 28964), (832, 24508), (1114, 18304), (1144, 17824), (1408, 14482), (1664, 12254), (2228, 9152), (2288, 8912), (2816, 7241), (3328, 6127), (4456, 4576)]