20872016

素因数分解:

$2^4\times {\mathrm{11}}^2\times {\mathrm{10781}}^1$

素因数の和:10811

約数の個数: 30

約数和(自身を含む): 44454186

約数和(自身を除く): 23582170

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 121, 176, 242, 484, 968, 1936, 10781, 21562, 43124, 86248, 118591, 172496, 237182, 474364, 948728, 1304501, 1897456, 2609002, 5218004, 10436008, 20872016]

約数ペア:

[(1, 20872016), (2, 10436008), (4, 5218004), (8, 2609002), (11, 1897456), (16, 1304501), (22, 948728), (44, 474364), (88, 237182), (121, 172496), (176, 118591), (242, 86248), (484, 43124), (968, 21562), (1936, 10781)]