18985665

素因数分解:

$3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{30871}}^1$

素因数の和:30920

約数の個数: 16

約数和(自身を含む): 31118976

約数和(自身を除く): 12133311

約数列:

[1, 3, 5, 15, 41, 123, 205, 615, 30871, 92613, 154355, 463065, 1265711, 3797133, 6328555, 18985665]

約数ペア:

[(1, 18985665), (3, 6328555), (5, 3797133), (15, 1265711), (41, 463065), (123, 154355), (205, 92613), (615, 30871)]