21971536

素因数分解:

$2^4\times {\mathrm{251}}^1\times {\mathrm{5471}}^1$

素因数の和:5730

約数の個数: 20

約数和(自身を含む): 42747264

約数和(自身を除く): 20775728

約数列:

[1, 2, 4, 8, 16, 251, 502, 1004, 2008, 4016, 5471, 10942, 21884, 43768, 87536, 1373221, 2746442, 5492884, 10985768, 21971536]

約数ペア:

[(1, 21971536), (2, 10985768), (4, 5492884), (8, 2746442), (16, 1373221), (251, 87536), (502, 43768), (1004, 21884), (2008, 10942), (4016, 5471)]