19912905

素因数分解:

$3^3\times 5^1\times {\mathrm{147503}}^1$

素因数の和:147517

約数の個数: 16

約数和(自身を含む): 35400960

約数和(自身を除く): 15488055

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 147503, 442509, 737515, 1327527, 2212545, 3982581, 6637635, 19912905]

約数ペア:

[(1, 19912905), (3, 6637635), (5, 3982581), (9, 2212545), (15, 1327527), (27, 737515), (45, 442509), (135, 147503)]