21238294

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{137911}}^1$

素因数の和:137931

約数の個数: 16

約数和(自身を含む): 39718656

約数和(自身を除く): 18480362

約数列:

[1, 2, 7, 11, 14, 22, 77, 154, 137911, 275822, 965377, 1517021, 1930754, 3034042, 10619147, 21238294]

約数ペア:

[(1, 21238294), (2, 10619147), (7, 3034042), (11, 1930754), (14, 1517021), (22, 965377), (77, 275822), (154, 137911)]