21305576

素因数分解:

$2^3\times {\mathrm{53}}^1\times {\mathrm{109}}^1\times {\mathrm{461}}^1$

素因数の和:629

約数の個数: 32

約数和(自身を含む): 41164200

約数和(自身を除く): 19858624

約数列:

[1, 2, 4, 8, 53, 106, 109, 212, 218, 424, 436, 461, 872, 922, 1844, 3688, 5777, 11554, 23108, 24433, 46216, 48866, 50249, 97732, 100498, 195464, 200996, 401992, 2663197, 5326394, 10652788, 21305576]

約数ペア:

[(1, 21305576), (2, 10652788), (4, 5326394), (8, 2663197), (53, 401992), (106, 200996), (109, 195464), (212, 100498), (218, 97732), (424, 50249), (436, 48866), (461, 46216), (872, 24433), (922, 23108), (1844, 11554), (3688, 5777)]