206989000

素因数分解:

$2^3\times 5^3\times {\mathrm{449}}^1\times {\mathrm{461}}^1$

素因数の和:931

約数の個数: 64

約数和(自身を含む): 486486000

約数和(自身を除く): 279497000

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 449, 461, 500, 898, 922, 1000, 1796, 1844, 2245, 2305, 3592, 3688, 4490, 4610, 8980, 9220, 11225, 11525, 17960, 18440, 22450, 23050, 44900, 46100, 56125, 57625, 89800, 92200, 112250, 115250, 206989, 224500, 230500, 413978, 449000, 461000, 827956, 1034945, 1655912, 2069890, 4139780, 5174725, 8279560, 10349450, 20698900, 25873625, 41397800, 51747250, 103494500, 206989000]

約数ペア:

[(1, 206989000), (2, 103494500), (4, 51747250), (5, 41397800), (8, 25873625), (10, 20698900), (20, 10349450), (25, 8279560), (40, 5174725), (50, 4139780), (100, 2069890), (125, 1655912), (200, 1034945), (250, 827956), (449, 461000), (461, 449000), (500, 413978), (898, 230500), (922, 224500), (1000, 206989), (1796, 115250), (1844, 112250), (2245, 92200), (2305, 89800), (3592, 57625), (3688, 56125), (4490, 46100), (4610, 44900), (8980, 23050), (9220, 22450), (11225, 18440), (11525, 17960)]