21495418

素因数分解:

$2^1\times 7^2\times {\mathrm{421}}^1\times {\mathrm{521}}^1$

素因数の和:958

約数の個数: 24

約数和(自身を含む): 37668564

約数和(自身を除く): 16173146

約数列:

[1, 2, 7, 14, 49, 98, 421, 521, 842, 1042, 2947, 3647, 5894, 7294, 20629, 25529, 41258, 51058, 219341, 438682, 1535387, 3070774, 10747709, 21495418]

約数ペア:

[(1, 21495418), (2, 10747709), (7, 3070774), (14, 1535387), (49, 438682), (98, 219341), (421, 51058), (521, 41258), (842, 25529), (1042, 20629), (2947, 7294), (3647, 5894)]