21248843

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{163}}^1\times {\mathrm{1693}}^1$

素因数の和:1874

約数の個数: 16

約数和(自身を含む): 26670336

約数和(自身を除く): 5421493

約数列:

[1, 7, 11, 77, 163, 1141, 1693, 1793, 11851, 12551, 18623, 130361, 275959, 1931713, 3035549, 21248843]

約数ペア:

[(1, 21248843), (7, 3035549), (11, 1931713), (77, 275959), (163, 130361), (1141, 18623), (1693, 12551), (1793, 11851)]