17219780

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{20023}}^1$

素因数の和:20075

約数の個数: 24

約数和(自身を含む): 37004352

約数和(自身を除く): 19784572

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 20023, 40046, 80092, 100115, 200230, 400460, 860989, 1721978, 3443956, 4304945, 8609890, 17219780]

約数ペア:

[(1, 17219780), (2, 8609890), (4, 4304945), (5, 3443956), (10, 1721978), (20, 860989), (43, 400460), (86, 200230), (172, 100115), (215, 80092), (430, 40046), (860, 20023)]