20528188

素因数分解:

$2^2\times {\mathrm{109}}^1\times {\mathrm{197}}^1\times {\mathrm{239}}^1$

素因数の和:549

約数の個数: 24

約数和(自身を含む): 36590400

約数和(自身を除く): 16062212

約数列:

[1, 2, 4, 109, 197, 218, 239, 394, 436, 478, 788, 956, 21473, 26051, 42946, 47083, 52102, 85892, 94166, 104204, 188332, 5132047, 10264094, 20528188]

約数ペア:

[(1, 20528188), (2, 10264094), (4, 5132047), (109, 188332), (197, 104204), (218, 94166), (239, 85892), (394, 52102), (436, 47083), (478, 42946), (788, 26051), (956, 21473)]