21178049589

素因数分解:

$3^3\times {\mathrm{149}}^1\times {\mathrm{787}}^1\times {\mathrm{6689}}^1$

素因数の和:7634

約数の個数: 32

約数和(自身を含む): 31630320000

約数和(自身を除く): 10452270411

約数列:

[1, 3, 9, 27, 149, 447, 787, 1341, 2361, 4023, 6689, 7083, 20067, 21249, 60201, 117263, 180603, 351789, 996661, 1055367, 2989983, 3166101, 5264243, 8969949, 15792729, 26909847, 47378187, 142134561, 784372207, 2353116621, 7059349863, 21178049589]

約数ペア:

[(1, 21178049589), (3, 7059349863), (9, 2353116621), (27, 784372207), (149, 142134561), (447, 47378187), (787, 26909847), (1341, 15792729), (2361, 8969949), (4023, 5264243), (6689, 3166101), (7083, 2989983), (20067, 1055367), (21249, 996661), (60201, 351789), (117263, 180603)]