18985515

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{74453}}^1$

素因数の和:74478

約数の個数: 16

約数和(自身を含む): 32164128

約数和(自身を除く): 13178613

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 74453, 223359, 372265, 1116795, 1265701, 3797103, 6328505, 18985515]

約数ペア:

[(1, 18985515), (3, 6328505), (5, 3797103), (15, 1265701), (17, 1116795), (51, 372265), (85, 223359), (255, 74453)]