3989950

素因数分解:

$2^1\times 5^2\times {\mathrm{199}}^1\times {\mathrm{401}}^1$

素因数の和:612

約数の個数: 24

約数和(自身を含む): 7477200

約数和(自身を除く): 3487250

約数列:

[1, 2, 5, 10, 25, 50, 199, 398, 401, 802, 995, 1990, 2005, 4010, 4975, 9950, 10025, 20050, 79799, 159598, 398995, 797990, 1994975, 3989950]

約数ペア:

[(1, 3989950), (2, 1994975), (5, 797990), (10, 398995), (25, 159598), (50, 79799), (199, 20050), (398, 10025), (401, 9950), (802, 4975), (995, 4010), (1990, 2005)]