21149665616

素因数分解:

$2^4\times {\mathrm{251}}^1\times {\mathrm{5266351}}^1$

素因数の和:5266610

約数の個数: 20

約数和(自身を含む): 41140741824

約数和(自身を除く): 19991076208

約数列:

[1, 2, 4, 8, 16, 251, 502, 1004, 2008, 4016, 5266351, 10532702, 21065404, 42130808, 84261616, 1321854101, 2643708202, 5287416404, 10574832808, 21149665616]

約数ペア:

[(1, 21149665616), (2, 10574832808), (4, 5287416404), (8, 2643708202), (16, 1321854101), (251, 84261616), (502, 42130808), (1004, 21065404), (2008, 10532702), (4016, 5266351)]