39405980

素因数分解:

$2^2\times 5^1\times {\mathrm{199}}^1\times {\mathrm{9901}}^1$

素因数の和:10109

約数の個数: 24

約数和(自身を含む): 83176800

約数和(自身を除く): 43770820

約数列:

[1, 2, 4, 5, 10, 20, 199, 398, 796, 995, 1990, 3980, 9901, 19802, 39604, 49505, 99010, 198020, 1970299, 3940598, 7881196, 9851495, 19702990, 39405980]

約数ペア:

[(1, 39405980), (2, 19702990), (4, 9851495), (5, 7881196), (10, 3940598), (20, 1970299), (199, 198020), (398, 99010), (796, 49505), (995, 39604), (1990, 19802), (3980, 9901)]