18000918

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1789}}^1$

素因数の和:1853

約数の個数: 48

約数和(自身を含む): 43002960

約数和(自身を除く): 25002042

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 43, 78, 86, 117, 129, 234, 258, 387, 559, 774, 1118, 1677, 1789, 3354, 3578, 5031, 5367, 10062, 10734, 16101, 23257, 32202, 46514, 69771, 76927, 139542, 153854, 209313, 230781, 418626, 461562, 692343, 1000051, 1384686, 2000102, 3000153, 6000306, 9000459, 18000918]

約数ペア:

[(1, 18000918), (2, 9000459), (3, 6000306), (6, 3000153), (9, 2000102), (13, 1384686), (18, 1000051), (26, 692343), (39, 461562), (43, 418626), (78, 230781), (86, 209313), (117, 153854), (129, 139542), (234, 76927), (258, 69771), (387, 46514), (559, 32202), (774, 23257), (1118, 16101), (1677, 10734), (1789, 10062), (3354, 5367), (3578, 5031)]