421729060

素因数分解:

$2^2\times 5^1\times {\mathrm{21086453}}^1$

素因数の和:21086462

約数の個数: 12

約数和(自身を含む): 885631068

約数和(自身を除く): 463902008

約数列:

[1, 2, 4, 5, 10, 20, 21086453, 42172906, 84345812, 105432265, 210864530, 421729060]

約数ペア:

[(1, 421729060), (2, 210864530), (4, 105432265), (5, 84345812), (10, 42172906), (20, 21086453)]