201621987

素因数分解:

$3^3\times 7^1\times {\mathrm{109}}^1\times {\mathrm{9787}}^1$

素因数の和:9912

約数の個数: 32

約数和(自身を含む): 344537600

約数和(自身を除く): 142915613

約数列:

[1, 3, 7, 9, 21, 27, 63, 109, 189, 327, 763, 981, 2289, 2943, 6867, 9787, 20601, 29361, 68509, 88083, 205527, 264249, 616581, 1066783, 1849743, 3200349, 7467481, 9601047, 22402443, 28803141, 67207329, 201621987]

約数ペア:

[(1, 201621987), (3, 67207329), (7, 28803141), (9, 22402443), (21, 9601047), (27, 7467481), (63, 3200349), (109, 1849743), (189, 1066783), (327, 616581), (763, 264249), (981, 205527), (2289, 88083), (2943, 68509), (6867, 29361), (9787, 20601)]