21919850

素因数分解:

$2^1\times 5^2\times {\mathrm{199}}^1\times {\mathrm{2203}}^1$

素因数の和:2414

約数の個数: 24

約数和(自身を含む): 40994400

約数和(自身を除く): 19074550

約数列:

[1, 2, 5, 10, 25, 50, 199, 398, 995, 1990, 2203, 4406, 4975, 9950, 11015, 22030, 55075, 110150, 438397, 876794, 2191985, 4383970, 10959925, 21919850]

約数ペア:

[(1, 21919850), (2, 10959925), (5, 4383970), (10, 2191985), (25, 876794), (50, 438397), (199, 110150), (398, 55075), (995, 22030), (1990, 11015), (2203, 9950), (4406, 4975)]