28035560

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{223}}^1\times {\mathrm{449}}^1$

素因数の和:690

約数の個数: 64

約数和(自身を含む): 72576000

約数和(自身を除く): 44540440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 223, 280, 446, 449, 892, 898, 1115, 1561, 1784, 1796, 2230, 2245, 3122, 3143, 3592, 4460, 4490, 6244, 6286, 7805, 8920, 8980, 12488, 12572, 15610, 15715, 17960, 25144, 31220, 31430, 62440, 62860, 100127, 125720, 200254, 400508, 500635, 700889, 801016, 1001270, 1401778, 2002540, 2803556, 3504445, 4005080, 5607112, 7008890, 14017780, 28035560]

約数ペア:

[(1, 28035560), (2, 14017780), (4, 7008890), (5, 5607112), (7, 4005080), (8, 3504445), (10, 2803556), (14, 2002540), (20, 1401778), (28, 1001270), (35, 801016), (40, 700889), (56, 500635), (70, 400508), (140, 200254), (223, 125720), (280, 100127), (446, 62860), (449, 62440), (892, 31430), (898, 31220), (1115, 25144), (1561, 17960), (1784, 15715), (1796, 15610), (2230, 12572), (2245, 12488), (3122, 8980), (3143, 8920), (3592, 7805), (4460, 6286), (4490, 6244)]