18071109

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{487}}^1$

素因数の和:550

約数の個数: 48

約数和(自身を含む): 32481280

約数和(自身を除く): 14410171

約数列:

[1, 3, 7, 9, 19, 21, 31, 57, 63, 93, 133, 171, 217, 279, 399, 487, 589, 651, 1197, 1461, 1767, 1953, 3409, 4123, 4383, 5301, 9253, 10227, 12369, 15097, 27759, 30681, 37107, 45291, 64771, 83277, 105679, 135873, 194313, 286843, 317037, 582939, 860529, 951111, 2007901, 2581587, 6023703, 18071109]

約数ペア:

[(1, 18071109), (3, 6023703), (7, 2581587), (9, 2007901), (19, 951111), (21, 860529), (31, 582939), (57, 317037), (63, 286843), (93, 194313), (133, 135873), (171, 105679), (217, 83277), (279, 64771), (399, 45291), (487, 37107), (589, 30681), (651, 27759), (1197, 15097), (1461, 12369), (1767, 10227), (1953, 9253), (3409, 5301), (4123, 4383)]