12938960

素因数分解:

$2^4\times 5^1\times {\mathrm{197}}^1\times {\mathrm{821}}^1$

素因数の和:1031

約数の個数: 40

約数和(自身を含む): 30272616

約数和(自身を除く): 17333656

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 197, 394, 788, 821, 985, 1576, 1642, 1970, 3152, 3284, 3940, 4105, 6568, 7880, 8210, 13136, 15760, 16420, 32840, 65680, 161737, 323474, 646948, 808685, 1293896, 1617370, 2587792, 3234740, 6469480, 12938960]

約数ペア:

[(1, 12938960), (2, 6469480), (4, 3234740), (5, 2587792), (8, 1617370), (10, 1293896), (16, 808685), (20, 646948), (40, 323474), (80, 161737), (197, 65680), (394, 32840), (788, 16420), (821, 15760), (985, 13136), (1576, 8210), (1642, 7880), (1970, 6568), (3152, 4105), (3284, 3940)]