21368331

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1$

素因数の和:224

約数の個数: 48

約数和(自身を含む): 34944000

約数和(自身を除く): 13575669

約数列:

[1, 3, 9, 19, 29, 31, 57, 87, 93, 139, 171, 261, 279, 417, 551, 589, 899, 1251, 1653, 1767, 2641, 2697, 4031, 4309, 4959, 5301, 7923, 8091, 12093, 12927, 17081, 23769, 36279, 38781, 51243, 76589, 81871, 124961, 153729, 229767, 245613, 374883, 689301, 736839, 1124649, 2374259, 7122777, 21368331]

約数ペア:

[(1, 21368331), (3, 7122777), (9, 2374259), (19, 1124649), (29, 736839), (31, 689301), (57, 374883), (87, 245613), (93, 229767), (139, 153729), (171, 124961), (261, 81871), (279, 76589), (417, 51243), (551, 38781), (589, 36279), (899, 23769), (1251, 17081), (1653, 12927), (1767, 12093), (2641, 8091), (2697, 7923), (4031, 5301), (4309, 4959)]