3999560

素因数分解:

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

素因数の和:100000

約数の個数: 16

約数和(自身を含む): 8999100

約数和(自身を除く): 4999540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 99989, 199978, 399956, 499945, 799912, 999890, 1999780, 3999560]

約数ペア:

[(1, 3999560), (2, 1999780), (4, 999890), (5, 799912), (8, 499945), (10, 399956), (20, 199978), (40, 99989)]