18716997

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{11161}}^1$

素因数の和:11220

約数の個数: 16

約数和(自身を含む): 27503168

約数和(自身を除く): 8786171

約数列:

[1, 3, 13, 39, 43, 129, 559, 1677, 11161, 33483, 145093, 435279, 479923, 1439769, 6238999, 18716997]

約数ペア:

[(1, 18716997), (3, 6238999), (13, 1439769), (39, 479923), (43, 435279), (129, 145093), (559, 33483), (1677, 11161)]