19875471

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{619}}^1$

素因数の和:779

約数の個数: 32

約数和(自身を含む): 33331200

約数和(自身を除く): 13455729

約数列:

[1, 3, 7, 11, 21, 33, 77, 139, 231, 417, 619, 973, 1529, 1857, 2919, 4333, 4587, 6809, 10703, 12999, 20427, 32109, 47663, 86041, 142989, 258123, 602287, 946451, 1806861, 2839353, 6625157, 19875471]

約数ペア:

[(1, 19875471), (3, 6625157), (7, 2839353), (11, 1806861), (21, 946451), (33, 602287), (77, 258123), (139, 142989), (231, 86041), (417, 47663), (619, 32109), (973, 20427), (1529, 12999), (1857, 10703), (2919, 6809), (4333, 4587)]