216912115

素因数分解:

$5^1\times 7^1\times {\mathrm{31}}^2\times {\mathrm{6449}}^1$

素因数の和:6523

約数の個数: 24

約数和(自身を含む): 307432800

約数和(自身を除く): 90520685

約数列:

[1, 5, 7, 31, 35, 155, 217, 961, 1085, 4805, 6449, 6727, 32245, 33635, 45143, 199919, 225715, 999595, 1399433, 6197489, 6997165, 30987445, 43382423, 216912115]

約数ペア:

[(1, 216912115), (5, 43382423), (7, 30987445), (31, 6997165), (35, 6197489), (155, 1399433), (217, 999595), (961, 225715), (1085, 199919), (4805, 45143), (6449, 33635), (6727, 32245)]