21240499

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{5507}}^1$

素因数の和:5562

約数の個数: 16

約数和(自身を含む): 26438400

約数和(自身を除く): 5197901

約数列:

[1, 7, 19, 29, 133, 203, 551, 3857, 5507, 38549, 104633, 159703, 732431, 1117921, 3034357, 21240499]

約数ペア:

[(1, 21240499), (7, 3034357), (19, 1117921), (29, 732431), (133, 159703), (203, 104633), (551, 38549), (3857, 5507)]