19889145

素因数分解:

$3^4\times 5^1\times {\mathrm{49109}}^1$

素因数の和:49126

約数の個数: 20

約数和(自身を含む): 35653860

約数和(自身を除く): 15764715

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 49109, 147327, 245545, 441981, 736635, 1325943, 2209905, 3977829, 6629715, 19889145]

約数ペア:

[(1, 19889145), (3, 6629715), (5, 3977829), (9, 2209905), (15, 1325943), (27, 736635), (45, 441981), (81, 245545), (135, 147327), (405, 49109)]