21327945

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{83639}}^1$

素因数の和:83664

約数の個数: 16

約数和(自身を含む): 36132480

約数和(自身を除く): 14804535

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 83639, 250917, 418195, 1254585, 1421863, 4265589, 7109315, 21327945]

約数ペア:

[(1, 21327945), (3, 7109315), (5, 4265589), (15, 1421863), (17, 1254585), (51, 418195), (85, 250917), (255, 83639)]