20945816

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{60889}}^1$

素因数の和:60938

約数の個数: 16

約数和(自身を含む): 40187400

約数和(自身を除く): 19241584

約数列:

[1, 2, 4, 8, 43, 86, 172, 344, 60889, 121778, 243556, 487112, 2618227, 5236454, 10472908, 20945816]

約数ペア:

[(1, 20945816), (2, 10472908), (4, 5236454), (8, 2618227), (43, 487112), (86, 243556), (172, 121778), (344, 60889)]