3989000

素因数分解:

$2^3\times 5^3\times {\mathrm{3989}}^1$

素因数の和:4010

約数の個数: 32

約数和(自身を含む): 9336600

約数和(自身を除く): 5347600

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 1000, 3989, 7978, 15956, 19945, 31912, 39890, 79780, 99725, 159560, 199450, 398900, 498625, 797800, 997250, 1994500, 3989000]

約数ペア:

[(1, 3989000), (2, 1994500), (4, 997250), (5, 797800), (8, 498625), (10, 398900), (20, 199450), (25, 159560), (40, 99725), (50, 79780), (100, 39890), (125, 31912), (200, 19945), (250, 15956), (500, 7978), (1000, 3989)]