21247093

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{2927}}^1$

素因数の和:3012

約数の個数: 16

約数和(自身を含む): 26141184

約数和(自身を除く): 4894091

約数列:

[1, 7, 17, 61, 119, 427, 1037, 2927, 7259, 20489, 49759, 178547, 348313, 1249829, 3035299, 21247093]

約数ペア:

[(1, 21247093), (7, 3035299), (17, 1249829), (61, 348313), (119, 178547), (427, 49759), (1037, 20489), (2927, 7259)]