20689994

素因数分解:

$2^1\times {\mathrm{13}}^2\times {\mathrm{41}}^1\times {\mathrm{1493}}^1$

素因数の和:1562

約数の個数: 24

約数和(自身を含む): 34448652

約数和(自身を除く): 13758658

約数列:

[1, 2, 13, 26, 41, 82, 169, 338, 533, 1066, 1493, 2986, 6929, 13858, 19409, 38818, 61213, 122426, 252317, 504634, 795769, 1591538, 10344997, 20689994]

約数ペア:

[(1, 20689994), (2, 10344997), (13, 1591538), (26, 795769), (41, 504634), (82, 252317), (169, 122426), (338, 61213), (533, 38818), (1066, 19409), (1493, 13858), (2986, 6929)]