18487100

素因数分解:

$2^2\times 5^2\times {\mathrm{199}}^1\times {\mathrm{929}}^1$

素因数の和:1142

約数の個数: 36

約数和(自身を含む): 40362000

約数和(自身を除く): 21874900

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 199, 398, 796, 929, 995, 1858, 1990, 3716, 3980, 4645, 4975, 9290, 9950, 18580, 19900, 23225, 46450, 92900, 184871, 369742, 739484, 924355, 1848710, 3697420, 4621775, 9243550, 18487100]

約数ペア:

[(1, 18487100), (2, 9243550), (4, 4621775), (5, 3697420), (10, 1848710), (20, 924355), (25, 739484), (50, 369742), (100, 184871), (199, 92900), (398, 46450), (796, 23225), (929, 19900), (995, 18580), (1858, 9950), (1990, 9290), (3716, 4975), (3980, 4645)]