21183550

素因数分解:

$2^1\times 5^2\times {\mathrm{199}}^1\times {\mathrm{2129}}^1$

素因数の和:2340

約数の個数: 24

約数和(自身を含む): 39618000

約数和(自身を除く): 18434450

約数列:

[1, 2, 5, 10, 25, 50, 199, 398, 995, 1990, 2129, 4258, 4975, 9950, 10645, 21290, 53225, 106450, 423671, 847342, 2118355, 4236710, 10591775, 21183550]

約数ペア:

[(1, 21183550), (2, 10591775), (5, 4236710), (10, 2118355), (25, 847342), (50, 423671), (199, 106450), (398, 53225), (995, 21290), (1990, 10645), (2129, 9950), (4258, 4975)]