18813710

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{21139}}^1$

素因数の和:21235

約数の個数: 16

約数和(自身を含む): 34246800

約数和(自身を除く): 15433090

約数列:

[1, 2, 5, 10, 89, 178, 445, 890, 21139, 42278, 105695, 211390, 1881371, 3762742, 9406855, 18813710]

約数ペア:

[(1, 18813710), (2, 9406855), (5, 3762742), (10, 1881371), (89, 211390), (178, 105695), (445, 42278), (890, 21139)]