19994968

素因数分解:

$2^3\times 7^1\times {\mathrm{277}}^1\times {\mathrm{1289}}^1$

素因数の和:1579

約数の個数: 32

約数和(自身を含む): 43034400

約数和(自身を除く): 23039432

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 277, 554, 1108, 1289, 1939, 2216, 2578, 3878, 5156, 7756, 9023, 10312, 15512, 18046, 36092, 72184, 357053, 714106, 1428212, 2499371, 2856424, 4998742, 9997484, 19994968]

約数ペア:

[(1, 19994968), (2, 9997484), (4, 4998742), (7, 2856424), (8, 2499371), (14, 1428212), (28, 714106), (56, 357053), (277, 72184), (554, 36092), (1108, 18046), (1289, 15512), (1939, 10312), (2216, 9023), (2578, 7756), (3878, 5156)]