20381128

素因数分解:

$2^3\times {\mathrm{23}}^1\times {\mathrm{257}}^1\times {\mathrm{431}}^1$

素因数の和:717

約数の個数: 32

約数和(自身を含む): 40124160

約数和(自身を除く): 19743032

約数列:

[1, 2, 4, 8, 23, 46, 92, 184, 257, 431, 514, 862, 1028, 1724, 2056, 3448, 5911, 9913, 11822, 19826, 23644, 39652, 47288, 79304, 110767, 221534, 443068, 886136, 2547641, 5095282, 10190564, 20381128]

約数ペア:

[(1, 20381128), (2, 10190564), (4, 5095282), (8, 2547641), (23, 886136), (46, 443068), (92, 221534), (184, 110767), (257, 79304), (431, 47288), (514, 39652), (862, 23644), (1028, 19826), (1724, 11822), (2056, 9913), (3448, 5911)]