21740265

素因数分解:

$3^3\times 5^1\times {\mathrm{161039}}^1$

素因数の和:161053

約数の個数: 16

約数和(自身を含む): 38649600

約数和(自身を除く): 16909335

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 161039, 483117, 805195, 1449351, 2415585, 4348053, 7246755, 21740265]

約数ペア:

[(1, 21740265), (3, 7246755), (5, 4348053), (9, 2415585), (15, 1449351), (27, 805195), (45, 483117), (135, 161039)]