128768920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{199}}^1\times {\mathrm{2311}}^1$

素因数の和:2528

約数の個数: 64

約数和(自身を含む): 332928000

約数和(自身を除く): 204159080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 199, 280, 398, 796, 995, 1393, 1592, 1990, 2311, 2786, 3980, 4622, 5572, 6965, 7960, 9244, 11144, 11555, 13930, 16177, 18488, 23110, 27860, 32354, 46220, 55720, 64708, 80885, 92440, 129416, 161770, 323540, 459889, 647080, 919778, 1839556, 2299445, 3219223, 3679112, 4598890, 6438446, 9197780, 12876892, 16096115, 18395560, 25753784, 32192230, 64384460, 128768920]

約数ペア:

[(1, 128768920), (2, 64384460), (4, 32192230), (5, 25753784), (7, 18395560), (8, 16096115), (10, 12876892), (14, 9197780), (20, 6438446), (28, 4598890), (35, 3679112), (40, 3219223), (56, 2299445), (70, 1839556), (140, 919778), (199, 647080), (280, 459889), (398, 323540), (796, 161770), (995, 129416), (1393, 92440), (1592, 80885), (1990, 64708), (2311, 55720), (2786, 46220), (3980, 32354), (4622, 27860), (5572, 23110), (6965, 18488), (7960, 16177), (9244, 13930), (11144, 11555)]