18391788

素因数分解:

$2^2\times 3^2\times {\mathrm{43}}^1\times {\mathrm{109}}^2$

素因数の和:271

約数の個数: 54

約数和(自身を含む): 48011964

約数和(自身を除く): 29620176

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 43, 86, 109, 129, 172, 218, 258, 327, 387, 436, 516, 654, 774, 981, 1308, 1548, 1962, 3924, 4687, 9374, 11881, 14061, 18748, 23762, 28122, 35643, 42183, 47524, 56244, 71286, 84366, 106929, 142572, 168732, 213858, 427716, 510883, 1021766, 1532649, 2043532, 3065298, 4597947, 6130596, 9195894, 18391788]

約数ペア:

[(1, 18391788), (2, 9195894), (3, 6130596), (4, 4597947), (6, 3065298), (9, 2043532), (12, 1532649), (18, 1021766), (36, 510883), (43, 427716), (86, 213858), (109, 168732), (129, 142572), (172, 106929), (218, 84366), (258, 71286), (327, 56244), (387, 47524), (436, 42183), (516, 35643), (654, 28122), (774, 23762), (981, 18748), (1308, 14061), (1548, 11881), (1962, 9374), (3924, 4687)]