21199085

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{461}}^1\times {\mathrm{541}}^1$

素因数の和:1024

約数の個数: 16

約数和(自身を含む): 27043632

約数和(自身を除く): 5844547

約数列:

[1, 5, 17, 85, 461, 541, 2305, 2705, 7837, 9197, 39185, 45985, 249401, 1247005, 4239817, 21199085]

約数ペア:

[(1, 21199085), (5, 4239817), (17, 1247005), (85, 249401), (461, 45985), (541, 39185), (2305, 9197), (2705, 7837)]