20805944

素因数分解:

$2^3\times {\mathrm{131}}^1\times {\mathrm{19853}}^1$

素因数の和:19990

約数の個数: 16

約数和(自身を含む): 39310920

約数和(自身を除く): 18504976

約数列:

[1, 2, 4, 8, 131, 262, 524, 1048, 19853, 39706, 79412, 158824, 2600743, 5201486, 10402972, 20805944]

約数ペア:

[(1, 20805944), (2, 10402972), (4, 5201486), (8, 2600743), (131, 158824), (262, 79412), (524, 39706), (1048, 19853)]