17657980

素因数分解:

$2^2\times 5^1\times {\mathrm{443}}^1\times {\mathrm{1993}}^1$

素因数の和:2445

約数の個数: 24

約数和(自身を含む): 37184112

約数和(自身を除く): 19526132

約数列:

[1, 2, 4, 5, 10, 20, 443, 886, 1772, 1993, 2215, 3986, 4430, 7972, 8860, 9965, 19930, 39860, 882899, 1765798, 3531596, 4414495, 8828990, 17657980]

約数ペア:

[(1, 17657980), (2, 8828990), (4, 4414495), (5, 3531596), (10, 1765798), (20, 882899), (443, 39860), (886, 19930), (1772, 9965), (1993, 8860), (2215, 7972), (3986, 4430)]