20827952

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{523}}^1$

素因数の和:681

約数の個数: 40

約数和(自身を含む): 42884160

約数和(自身を除く): 22056208

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 131, 152, 262, 304, 523, 524, 1046, 1048, 2092, 2096, 2489, 4184, 4978, 8368, 9937, 9956, 19874, 19912, 39748, 39824, 68513, 79496, 137026, 158992, 274052, 548104, 1096208, 1301747, 2603494, 5206988, 10413976, 20827952]

約数ペア:

[(1, 20827952), (2, 10413976), (4, 5206988), (8, 2603494), (16, 1301747), (19, 1096208), (38, 548104), (76, 274052), (131, 158992), (152, 137026), (262, 79496), (304, 68513), (523, 39824), (524, 39748), (1046, 19912), (1048, 19874), (2092, 9956), (2096, 9937), (2489, 8368), (4184, 4978)]