21986545

素因数分解:

$5^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{2087}}^1$

素因数の和:2149

約数の個数: 24

約数和(自身を含む): 31420224

約数和(自身を除く): 9433679

約数列:

[1, 5, 7, 35, 43, 49, 215, 245, 301, 1505, 2087, 2107, 10435, 10535, 14609, 73045, 89741, 102263, 448705, 511315, 628187, 3140935, 4397309, 21986545]

約数ペア:

[(1, 21986545), (5, 4397309), (7, 3140935), (35, 628187), (43, 511315), (49, 448705), (215, 102263), (245, 89741), (301, 73045), (1505, 14609), (2087, 10535), (2107, 10435)]