16421920

素因数分解:

$2^5\times 5^1\times {\mathrm{197}}^1\times {\mathrm{521}}^1$

素因数の和:733

約数の個数: 48

約数和(自身を含む): 39068568

約数和(自身を除く): 22646648

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 197, 394, 521, 788, 985, 1042, 1576, 1970, 2084, 2605, 3152, 3940, 4168, 5210, 6304, 7880, 8336, 10420, 15760, 16672, 20840, 31520, 41680, 83360, 102637, 205274, 410548, 513185, 821096, 1026370, 1642192, 2052740, 3284384, 4105480, 8210960, 16421920]

約数ペア:

[(1, 16421920), (2, 8210960), (4, 4105480), (5, 3284384), (8, 2052740), (10, 1642192), (16, 1026370), (20, 821096), (32, 513185), (40, 410548), (80, 205274), (160, 102637), (197, 83360), (394, 41680), (521, 31520), (788, 20840), (985, 16672), (1042, 15760), (1576, 10420), (1970, 8336), (2084, 7880), (2605, 6304), (3152, 5210), (3940, 4168)]