21878416

素因数分解:

$2^4\times 7^1\times {\mathrm{195343}}^1$

素因数の和:195358

約数の個数: 20

約数和(自身を含む): 48445312

約数和(自身を除く): 26566896

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 195343, 390686, 781372, 1367401, 1562744, 2734802, 3125488, 5469604, 10939208, 21878416]

約数ペア:

[(1, 21878416), (2, 10939208), (4, 5469604), (7, 3125488), (8, 2734802), (14, 1562744), (16, 1367401), (28, 781372), (56, 390686), (112, 195343)]