21072136

素因数分解:

$2^3\times {\mathrm{131}}^1\times {\mathrm{20107}}^1$

素因数の和:20244

約数の個数: 16

約数和(自身を含む): 39813840

約数和(自身を除く): 18741704

約数列:

[1, 2, 4, 8, 131, 262, 524, 1048, 20107, 40214, 80428, 160856, 2634017, 5268034, 10536068, 21072136]

約数ペア:

[(1, 21072136), (2, 10536068), (4, 5268034), (8, 2634017), (131, 160856), (262, 80428), (524, 40214), (1048, 20107)]