2021086040

素因数分解:

$2^3\times 5^1\times {\mathrm{197}}^1\times {\mathrm{256483}}^1$

素因数の和:256691

約数の個数: 32

約数和(自身を含む): 4570544880

約数和(自身を除く): 2549458840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 197, 394, 788, 985, 1576, 1970, 3940, 7880, 256483, 512966, 1025932, 1282415, 2051864, 2564830, 5129660, 10259320, 50527151, 101054302, 202108604, 252635755, 404217208, 505271510, 1010543020, 2021086040]

約数ペア:

[(1, 2021086040), (2, 1010543020), (4, 505271510), (5, 404217208), (8, 252635755), (10, 202108604), (20, 101054302), (40, 50527151), (197, 10259320), (394, 5129660), (788, 2564830), (985, 2051864), (1576, 1282415), (1970, 1025932), (3940, 512966), (7880, 256483)]