18918873

素因数分解:

$3^3\times {\mathrm{71}}^2\times {\mathrm{139}}^1$

素因数の和:290

約数の個数: 24

約数和(自身を含む): 28632800

約数和(自身を除く): 9713927

約数列:

[1, 3, 9, 27, 71, 139, 213, 417, 639, 1251, 1917, 3753, 5041, 9869, 15123, 29607, 45369, 88821, 136107, 266463, 700699, 2102097, 6306291, 18918873]

約数ペア:

[(1, 18918873), (3, 6306291), (9, 2102097), (27, 700699), (71, 266463), (139, 136107), (213, 88821), (417, 45369), (639, 29607), (1251, 15123), (1917, 9869), (3753, 5041)]