21044439

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{41}}^2\times {\mathrm{107}}^1$

素因数の和:208

約数の個数: 36

約数和(自身を含む): 33867288

約数和(自身を除く): 12822849

約数列:

[1, 3, 9, 13, 39, 41, 107, 117, 123, 321, 369, 533, 963, 1391, 1599, 1681, 4173, 4387, 4797, 5043, 12519, 13161, 15129, 21853, 39483, 57031, 65559, 171093, 179867, 196677, 513279, 539601, 1618803, 2338271, 7014813, 21044439]

約数ペア:

[(1, 21044439), (3, 7014813), (9, 2338271), (13, 1618803), (39, 539601), (41, 513279), (107, 196677), (117, 179867), (123, 171093), (321, 65559), (369, 57031), (533, 39483), (963, 21853), (1391, 15129), (1599, 13161), (1681, 12519), (4173, 5043), (4387, 4797)]