21437521

素因数分解:

$7^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{1063}}^1$

素因数の和:1180

約数の個数: 16

約数和(自身を含む): 25467904

約数和(自身を除く): 4030383

約数列:

[1, 7, 43, 67, 301, 469, 1063, 2881, 7441, 20167, 45709, 71221, 319963, 498547, 3062503, 21437521]

約数ペア:

[(1, 21437521), (7, 3062503), (43, 498547), (67, 319963), (301, 71221), (469, 45709), (1063, 20167), (2881, 7441)]