21893637

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{113}}^1\times {\mathrm{131}}^1$

素因数の和:293

約数の個数: 32

約数和(自身を含む): 32503680

約数和(自身を除く): 10610043

約数列:

[1, 3, 17, 29, 51, 87, 113, 131, 339, 393, 493, 1479, 1921, 2227, 3277, 3799, 5763, 6681, 9831, 11397, 14803, 44409, 55709, 64583, 167127, 193749, 251651, 429287, 754953, 1287861, 7297879, 21893637]

約数ペア:

[(1, 21893637), (3, 7297879), (17, 1287861), (29, 754953), (51, 429287), (87, 251651), (113, 193749), (131, 167127), (339, 64583), (393, 55709), (493, 44409), (1479, 14803), (1921, 11397), (2227, 9831), (3277, 6681), (3799, 5763)]