25565211

素因数分解:

$3^2\times 7^2\times {\mathrm{29}}^1\times {\mathrm{1999}}^1$

素因数の和:2048

約数の個数: 36

約数和(自身を含む): 44460000

約数和(自身を除く): 18894789

約数列:

[1, 3, 7, 9, 21, 29, 49, 63, 87, 147, 203, 261, 441, 609, 1421, 1827, 1999, 4263, 5997, 12789, 13993, 17991, 41979, 57971, 97951, 125937, 173913, 293853, 405797, 521739, 881559, 1217391, 2840579, 3652173, 8521737, 25565211]

約数ペア:

[(1, 25565211), (3, 8521737), (7, 3652173), (9, 2840579), (21, 1217391), (29, 881559), (49, 521739), (63, 405797), (87, 293853), (147, 173913), (203, 125937), (261, 97951), (441, 57971), (609, 41979), (1421, 17991), (1827, 13993), (1999, 12789), (4263, 5997)]