20466385

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{47}}^2\times {\mathrm{109}}^1$

素因数の和:225

約数の個数: 24

約数和(自身を含む): 26813160

約数和(自身を除く): 6346775

約数列:

[1, 5, 17, 47, 85, 109, 235, 545, 799, 1853, 2209, 3995, 5123, 9265, 11045, 25615, 37553, 87091, 187765, 240781, 435455, 1203905, 4093277, 20466385]

約数ペア:

[(1, 20466385), (5, 4093277), (17, 1203905), (47, 435455), (85, 240781), (109, 187765), (235, 87091), (545, 37553), (799, 25615), (1853, 11045), (2209, 9265), (3995, 5123)]