28378520

素因数分解:

$2^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{10589}}^1$

素因数の和:10667

約数の個数: 32

約数和(自身を含む): 64810800

約数和(自身を除く): 36432280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 67, 134, 268, 335, 536, 670, 1340, 2680, 10589, 21178, 42356, 52945, 84712, 105890, 211780, 423560, 709463, 1418926, 2837852, 3547315, 5675704, 7094630, 14189260, 28378520]

約数ペア:

[(1, 28378520), (2, 14189260), (4, 7094630), (5, 5675704), (8, 3547315), (10, 2837852), (20, 1418926), (40, 709463), (67, 423560), (134, 211780), (268, 105890), (335, 84712), (536, 52945), (670, 42356), (1340, 21178), (2680, 10589)]