209728415

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{75037}}^1$

素因数の和:75098

約数の個数: 16

約数和(自身を含む): 277340448

約数和(自身を除く): 67612033

約数列:

[1, 5, 13, 43, 65, 215, 559, 2795, 75037, 375185, 975481, 3226591, 4877405, 16132955, 41945683, 209728415]

約数ペア:

[(1, 209728415), (5, 41945683), (13, 16132955), (43, 4877405), (65, 3226591), (215, 975481), (559, 375185), (2795, 75037)]