20402012

素因数分解:

$2^2\times {\mathrm{23}}^1\times {\mathrm{211}}^1\times {\mathrm{1051}}^1$

素因数の和:1289

約数の個数: 24

約数和(自身を含む): 37468032

約数和(自身を除く): 17066020

約数列:

[1, 2, 4, 23, 46, 92, 211, 422, 844, 1051, 2102, 4204, 4853, 9706, 19412, 24173, 48346, 96692, 221761, 443522, 887044, 5100503, 10201006, 20402012]

約数ペア:

[(1, 20402012), (2, 10201006), (4, 5100503), (23, 887044), (46, 443522), (92, 221761), (211, 96692), (422, 48346), (844, 24173), (1051, 19412), (2102, 9706), (4204, 4853)]