20820656

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{68489}}^1$

素因数の和:68516

約数の個数: 20

約数和(自身を含む): 42463800

約数和(自身を除く): 21643144

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 68489, 136978, 273956, 547912, 1095824, 1301291, 2602582, 5205164, 10410328, 20820656]

約数ペア:

[(1, 20820656), (2, 10410328), (4, 5205164), (8, 2602582), (16, 1301291), (19, 1095824), (38, 547912), (76, 273956), (152, 136978), (304, 68489)]