20425905

素因数分解:

$3^3\times 5^1\times {\mathrm{151303}}^1$

素因数の和:151317

約数の個数: 16

約数和(自身を含む): 36312960

約数和(自身を除く): 15887055

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 151303, 453909, 756515, 1361727, 2269545, 4085181, 6808635, 20425905]

約数ペア:

[(1, 20425905), (3, 6808635), (5, 4085181), (9, 2269545), (15, 1361727), (27, 756515), (45, 453909), (135, 151303)]