20389136

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{31081}}^1$

素因数の和:31130

約数の個数: 20

約数和(自身を含む): 40468764

約数和(自身を除く): 20079628

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 31081, 62162, 124324, 248648, 497296, 1274321, 2548642, 5097284, 10194568, 20389136]

約数ペア:

[(1, 20389136), (2, 10194568), (4, 5097284), (8, 2548642), (16, 1274321), (41, 497296), (82, 248648), (164, 124324), (328, 62162), (656, 31081)]