20947240

素因数分解:

$2^3\times 5^1\times {\mathrm{523681}}^1$

素因数の和:523692

約数の個数: 16

約数和(自身を含む): 47131380

約数和(自身を除く): 26184140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 523681, 1047362, 2094724, 2618405, 4189448, 5236810, 10473620, 20947240]

約数ペア:

[(1, 20947240), (2, 10473620), (4, 5236810), (5, 4189448), (8, 2618405), (10, 2094724), (20, 1047362), (40, 523681)]