128882200

素因数分解:

$2^3\times 5^2\times {\mathrm{644411}}^1$

素因数の和:644427

約数の個数: 24

約数和(自身を含む): 299651580

約数和(自身を除く): 170769380

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 644411, 1288822, 2577644, 3222055, 5155288, 6444110, 12888220, 16110275, 25776440, 32220550, 64441100, 128882200]

約数ペア:

[(1, 128882200), (2, 64441100), (4, 32220550), (5, 25776440), (8, 16110275), (10, 12888220), (20, 6444110), (25, 5155288), (40, 3222055), (50, 2577644), (100, 1288822), (200, 644411)]