99989000

素因数分解:

$2^3\times 5^3\times {\mathrm{99989}}^1$

素因数の和:100010

約数の個数: 32

約数和(自身を含む): 233976600

約数和(自身を除く): 133987600

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 1000, 99989, 199978, 399956, 499945, 799912, 999890, 1999780, 2499725, 3999560, 4999450, 9998900, 12498625, 19997800, 24997250, 49994500, 99989000]

約数ペア:

[(1, 99989000), (2, 49994500), (4, 24997250), (5, 19997800), (8, 12498625), (10, 9998900), (20, 4999450), (25, 3999560), (40, 2499725), (50, 1999780), (100, 999890), (125, 799912), (200, 499945), (250, 399956), (500, 199978), (1000, 99989)]