28500820

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{20071}}^1$

素因数の和:20151

約数の個数: 24

約数和(自身を含む): 60697728

約数和(自身を除く): 32196908

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 20071, 40142, 80284, 100355, 200710, 401420, 1425041, 2850082, 5700164, 7125205, 14250410, 28500820]

約数ペア:

[(1, 28500820), (2, 14250410), (4, 7125205), (5, 5700164), (10, 2850082), (20, 1425041), (71, 401420), (142, 200710), (284, 100355), (355, 80284), (710, 40142), (1420, 20071)]