20806301680

素因数分解:

$2^4\times 5^1\times {\mathrm{10151}}^1\times {\mathrm{25621}}^1$

素因数の和:35785

約数の個数: 40

約数和(自身を含む): 48381305184

約数和(自身を除く): 27575003504

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 10151, 20302, 25621, 40604, 50755, 51242, 81208, 101510, 102484, 128105, 162416, 203020, 204968, 256210, 406040, 409936, 512420, 812080, 1024840, 2049680, 260078771, 520157542, 1040315084, 1300393855, 2080630168, 2600787710, 4161260336, 5201575420, 10403150840, 20806301680]

約数ペア:

[(1, 20806301680), (2, 10403150840), (4, 5201575420), (5, 4161260336), (8, 2600787710), (10, 2080630168), (16, 1300393855), (20, 1040315084), (40, 520157542), (80, 260078771), (10151, 2049680), (20302, 1024840), (25621, 812080), (40604, 512420), (50755, 409936), (51242, 406040), (81208, 256210), (101510, 204968), (102484, 203020), (128105, 162416)]