15999560

素因数分解:

$2^3\times 5^1\times {\mathrm{399989}}^1$

素因数の和:400000

約数の個数: 16

約数和(自身を含む): 35999100

約数和(自身を除く): 19999540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 399989, 799978, 1599956, 1999945, 3199912, 3999890, 7999780, 15999560]

約数ペア:

[(1, 15999560), (2, 7999780), (4, 3999890), (5, 3199912), (8, 1999945), (10, 1599956), (20, 799978), (40, 399989)]