4019920

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{461}}^1$

素因数の和:583

約数の個数: 40

約数和(自身を含む): 9452520

約数和(自身を除く): 5432600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 436, 461, 545, 872, 922, 1090, 1744, 1844, 2180, 2305, 3688, 4360, 4610, 7376, 8720, 9220, 18440, 36880, 50249, 100498, 200996, 251245, 401992, 502490, 803984, 1004980, 2009960, 4019920]

約数ペア:

[(1, 4019920), (2, 2009960), (4, 1004980), (5, 803984), (8, 502490), (10, 401992), (16, 251245), (20, 200996), (40, 100498), (80, 50249), (109, 36880), (218, 18440), (436, 9220), (461, 8720), (545, 7376), (872, 4610), (922, 4360), (1090, 3688), (1744, 2305), (1844, 2180)]