18431919

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{239}}^1$

素因数の和:316

約数の個数: 48

約数和(自身を含む): 31449600

約数和(自身を除く): 13017681

約数列:

[1, 3, 9, 11, 19, 33, 41, 57, 99, 123, 171, 209, 239, 369, 451, 627, 717, 779, 1353, 1881, 2151, 2337, 2629, 4059, 4541, 7011, 7887, 8569, 9799, 13623, 23661, 25707, 29397, 40869, 49951, 77121, 88191, 107789, 149853, 186181, 323367, 449559, 558543, 970101, 1675629, 2047991, 6143973, 18431919]

約数ペア:

[(1, 18431919), (3, 6143973), (9, 2047991), (11, 1675629), (19, 970101), (33, 558543), (41, 449559), (57, 323367), (99, 186181), (123, 149853), (171, 107789), (209, 88191), (239, 77121), (369, 49951), (451, 40869), (627, 29397), (717, 25707), (779, 23661), (1353, 13623), (1881, 9799), (2151, 8569), (2337, 7887), (2629, 7011), (4059, 4541)]