21000605353

素因数分解:

$7^1\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{293}}^1\times {\mathrm{1409}}^1$

素因数の和:1778

約数の個数: 48

約数和(自身を含む): 26703008640

約数和(自身を除く): 5702403287

約数列:

[1, 7, 13, 43, 91, 169, 293, 301, 559, 1183, 1409, 2051, 3809, 3913, 7267, 9863, 12599, 18317, 26663, 49517, 50869, 60587, 88193, 128219, 163787, 238121, 346619, 412837, 424109, 787631, 1146509, 1666847, 2129231, 2889859, 5366881, 5513417, 10239203, 14904617, 17751991, 37568167, 69769453, 71674421, 124263937, 230775883, 488386171, 1615431181, 3000086479, 21000605353]

約数ペア:

[(1, 21000605353), (7, 3000086479), (13, 1615431181), (43, 488386171), (91, 230775883), (169, 124263937), (293, 71674421), (301, 69769453), (559, 37568167), (1183, 17751991), (1409, 14904617), (2051, 10239203), (3809, 5513417), (3913, 5366881), (7267, 2889859), (9863, 2129231), (12599, 1666847), (18317, 1146509), (26663, 787631), (49517, 424109), (50869, 412837), (60587, 346619), (88193, 238121), (128219, 163787)]