21360405

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{129457}}^1$

素因数の和:129476

約数の個数: 16

約数和(自身を含む): 37283904

約数和(自身を除く): 15923499

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 129457, 388371, 647285, 1424027, 1941855, 4272081, 7120135, 21360405]

約数ペア:

[(1, 21360405), (3, 7120135), (5, 4272081), (11, 1941855), (15, 1424027), (33, 647285), (55, 388371), (165, 129457)]