18513550

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{821}}^1$

素因数の和:885

約数の個数: 48

約数和(自身を含む): 38528784

約数和(自身を除く): 20015234

約数列:

[1, 2, 5, 10, 11, 22, 25, 41, 50, 55, 82, 110, 205, 275, 410, 451, 550, 821, 902, 1025, 1642, 2050, 2255, 4105, 4510, 8210, 9031, 11275, 18062, 20525, 22550, 33661, 41050, 45155, 67322, 90310, 168305, 225775, 336610, 370271, 451550, 740542, 841525, 1683050, 1851355, 3702710, 9256775, 18513550]

約数ペア:

[(1, 18513550), (2, 9256775), (5, 3702710), (10, 1851355), (11, 1683050), (22, 841525), (25, 740542), (41, 451550), (50, 370271), (55, 336610), (82, 225775), (110, 168305), (205, 90310), (275, 67322), (410, 45155), (451, 41050), (550, 33661), (821, 22550), (902, 20525), (1025, 18062), (1642, 11275), (2050, 9031), (2255, 8210), (4105, 4510)]