280023680

素因数分解:

$2^7\times 5^1\times {\mathrm{197}}^1\times {\mathrm{2221}}^1$

素因数の和:2437

約数の個数: 64

約数和(自身を含む): 673132680

約数和(自身を除く): 393109000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 197, 320, 394, 640, 788, 985, 1576, 1970, 2221, 3152, 3940, 4442, 6304, 7880, 8884, 11105, 12608, 15760, 17768, 22210, 25216, 31520, 35536, 44420, 63040, 71072, 88840, 126080, 142144, 177680, 284288, 355360, 437537, 710720, 875074, 1421440, 1750148, 2187685, 3500296, 4375370, 7000592, 8750740, 14001184, 17501480, 28002368, 35002960, 56004736, 70005920, 140011840, 280023680]

約数ペア:

[(1, 280023680), (2, 140011840), (4, 70005920), (5, 56004736), (8, 35002960), (10, 28002368), (16, 17501480), (20, 14001184), (32, 8750740), (40, 7000592), (64, 4375370), (80, 3500296), (128, 2187685), (160, 1750148), (197, 1421440), (320, 875074), (394, 710720), (640, 437537), (788, 355360), (985, 284288), (1576, 177680), (1970, 142144), (2221, 126080), (3152, 88840), (3940, 71072), (4442, 63040), (6304, 44420), (7880, 35536), (8884, 31520), (11105, 25216), (12608, 22210), (15760, 17768)]