20257328

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{13913}}^1$

素因数の和:13941

約数の個数: 40

約数和(自身を含む): 48309408

約数和(自身を除く): 28052080

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 91, 104, 112, 182, 208, 364, 728, 1456, 13913, 27826, 55652, 97391, 111304, 180869, 194782, 222608, 361738, 389564, 723476, 779128, 1266083, 1446952, 1558256, 2532166, 2893904, 5064332, 10128664, 20257328]

約数ペア:

[(1, 20257328), (2, 10128664), (4, 5064332), (7, 2893904), (8, 2532166), (13, 1558256), (14, 1446952), (16, 1266083), (26, 779128), (28, 723476), (52, 389564), (56, 361738), (91, 222608), (104, 194782), (112, 180869), (182, 111304), (208, 97391), (364, 55652), (728, 27826), (1456, 13913)]