18990765

素因数分解:

$3^2\times 5^1\times {\mathrm{503}}^1\times {\mathrm{839}}^1$

素因数の和:1353

約数の個数: 24

約数和(自身を含む): 33022080

約数和(自身を除く): 14031315

約数列:

[1, 3, 5, 9, 15, 45, 503, 839, 1509, 2515, 2517, 4195, 4527, 7545, 7551, 12585, 22635, 37755, 422017, 1266051, 2110085, 3798153, 6330255, 18990765]

約数ペア:

[(1, 18990765), (3, 6330255), (5, 3798153), (9, 2110085), (15, 1266051), (45, 422017), (503, 37755), (839, 22635), (1509, 12585), (2515, 7551), (2517, 7545), (4195, 4527)]