81215315

素因数分解:

$5^1\times {\mathrm{157}}^1\times {\mathrm{307}}^1\times {\mathrm{337}}^1$

素因数の和:806

約数の個数: 16

約数和(自身を含む): 98690592

約数和(自身を除く): 17475277

約数列:

[1, 5, 157, 307, 337, 785, 1535, 1685, 48199, 52909, 103459, 240995, 264545, 517295, 16243063, 81215315]

約数ペア:

[(1, 81215315), (5, 16243063), (157, 517295), (307, 264545), (337, 240995), (785, 103459), (1535, 52909), (1685, 48199)]