21037387

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{3187}}^1$

素因数の和:3258

約数の個数: 16

約数和(自身を含む): 25708032

約数和(自身を除く): 4670645

約数列:

[1, 7, 23, 41, 161, 287, 943, 3187, 6601, 22309, 73301, 130667, 513107, 914669, 3005341, 21037387]

約数ペア:

[(1, 21037387), (7, 3005341), (23, 914669), (41, 513107), (161, 130667), (287, 73301), (943, 22309), (3187, 6601)]