12720496

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{19391}}^1$

素因数の和:19440

約数の個数: 20

約数和(自身を含む): 25248384

約数和(自身を除く): 12527888

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 19391, 38782, 77564, 155128, 310256, 795031, 1590062, 3180124, 6360248, 12720496]

約数ペア:

[(1, 12720496), (2, 6360248), (4, 3180124), (8, 1590062), (16, 795031), (41, 310256), (82, 155128), (164, 77564), (328, 38782), (656, 19391)]