31432880

素因数分解:

$2^4\times 5^1\times {\mathrm{392911}}^1$

素因数の和:392924

約数の個数: 20

約数和(自身を含む): 73081632

約数和(自身を除く): 41648752

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 392911, 785822, 1571644, 1964555, 3143288, 3929110, 6286576, 7858220, 15716440, 31432880]

約数ペア:

[(1, 31432880), (2, 15716440), (4, 7858220), (5, 6286576), (8, 3929110), (10, 3143288), (16, 1964555), (20, 1571644), (40, 785822), (80, 392911)]