21242516

素因数分解:

$2^2\times {\mathrm{43}}^1\times {\mathrm{123503}}^1$

素因数の和:123550

約数の個数: 12

約数和(自身を含む): 38039232

約数和(自身を除く): 16796716

約数列:

[1, 2, 4, 43, 86, 172, 123503, 247006, 494012, 5310629, 10621258, 21242516]

約数ペア:

[(1, 21242516), (2, 10621258), (4, 5310629), (43, 494012), (86, 247006), (172, 123503)]