21267038

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{509}}^1\times {\mathrm{1607}}^1$

素因数の和:2131

約数の個数: 16

約数和(自身を含む): 34443360

約数和(自身を除く): 13176322

約数列:

[1, 2, 13, 26, 509, 1018, 1607, 3214, 6617, 13234, 20891, 41782, 817963, 1635926, 10633519, 21267038]

約数ペア:

[(1, 21267038), (2, 10633519), (13, 1635926), (26, 817963), (509, 41782), (1018, 20891), (1607, 13234), (3214, 6617)]