20646656

素因数分解:

$2^8\times {\mathrm{80651}}^1$

素因数の和:80667

約数の個数: 18

約数和(自身を含む): 41213172

約数和(自身を除く): 20566516

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 256, 80651, 161302, 322604, 645208, 1290416, 2580832, 5161664, 10323328, 20646656]

約数ペア:

[(1, 20646656), (2, 10323328), (4, 5161664), (8, 2580832), (16, 1290416), (32, 645208), (64, 322604), (128, 161302), (256, 80651)]