128571420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{2142857}}^1$

素因数の和:2142869

約数の個数: 24

約数和(自身を含む): 360000144

約数和(自身を除く): 231428724

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 2142857, 4285714, 6428571, 8571428, 10714285, 12857142, 21428570, 25714284, 32142855, 42857140, 64285710, 128571420]

約数ペア:

[(1, 128571420), (2, 64285710), (3, 42857140), (4, 32142855), (5, 25714284), (6, 21428570), (10, 12857142), (12, 10714285), (15, 8571428), (20, 6428571), (30, 4285714), (60, 2142857)]