21745168

素因数分解:

$2^4\times {\mathrm{607}}^1\times {\mathrm{2239}}^1$

素因数の和:2854

約数の個数: 20

約数和(自身を含む): 42219520

約数和(自身を除く): 20474352

約数列:

[1, 2, 4, 8, 16, 607, 1214, 2239, 2428, 4478, 4856, 8956, 9712, 17912, 35824, 1359073, 2718146, 5436292, 10872584, 21745168]

約数ペア:

[(1, 21745168), (2, 10872584), (4, 5436292), (8, 2718146), (16, 1359073), (607, 35824), (1214, 17912), (2239, 9712), (2428, 8956), (4478, 4856)]