21012595

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{5749}}^1$

素因数の和:5814

約数の個数: 16

約数和(自身を含む): 27324000

約数和(自身を除く): 6311405

約数列:

[1, 5, 17, 43, 85, 215, 731, 3655, 5749, 28745, 97733, 247207, 488665, 1236035, 4202519, 21012595]

約数ペア:

[(1, 21012595), (5, 4202519), (17, 1236035), (43, 488665), (85, 247207), (215, 97733), (731, 28745), (3655, 5749)]