18785319

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^2\times {\mathrm{89}}^1$

素因数の和:164

約数の個数: 48

約数和(自身を含む): 31852800

約数和(自身を除く): 13067481

約数列:

[1, 3, 7, 19, 21, 23, 57, 69, 89, 133, 161, 267, 399, 437, 483, 529, 623, 1311, 1587, 1691, 1869, 2047, 3059, 3703, 5073, 6141, 9177, 10051, 11109, 11837, 14329, 30153, 35511, 38893, 42987, 47081, 70357, 116679, 141243, 211071, 272251, 329567, 816753, 894539, 988701, 2683617, 6261773, 18785319]

約数ペア:

[(1, 18785319), (3, 6261773), (7, 2683617), (19, 988701), (21, 894539), (23, 816753), (57, 329567), (69, 272251), (89, 211071), (133, 141243), (161, 116679), (267, 70357), (399, 47081), (437, 42987), (483, 38893), (529, 35511), (623, 30153), (1311, 14329), (1587, 11837), (1691, 11109), (1869, 10051), (2047, 9177), (3059, 6141), (3703, 5073)]