20003665

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{443}}^1\times {\mathrm{821}}^1$

素因数の和:1280

約数の個数: 16

約数和(自身を含む): 26277696

約数和(自身を除く): 6274031

約数列:

[1, 5, 11, 55, 443, 821, 2215, 4105, 4873, 9031, 24365, 45155, 363703, 1818515, 4000733, 20003665]

約数ペア:

[(1, 20003665), (5, 4000733), (11, 1818515), (55, 363703), (443, 45155), (821, 24365), (2215, 9031), (4105, 4873)]