209401615

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{181}}^1\times {\mathrm{5381}}^1$

素因数の和:5610

約数の個数: 16

約数和(自身を含む): 258594336

約数和(自身を除く): 49192721

約数列:

[1, 5, 43, 181, 215, 905, 5381, 7783, 26905, 38915, 231383, 973961, 1156915, 4869805, 41880323, 209401615]

約数ペア:

[(1, 209401615), (5, 41880323), (43, 4869805), (181, 1156915), (215, 973961), (905, 231383), (5381, 38915), (7783, 26905)]