2008408880

素因数分解:

$2^4\times 5^1\times {\mathrm{25105111}}^1$

素因数の和:25105124

約数の個数: 20

約数和(自身を含む): 4669550832

約数和(自身を除く): 2661141952

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 25105111, 50210222, 100420444, 125525555, 200840888, 251051110, 401681776, 502102220, 1004204440, 2008408880]

約数ペア:

[(1, 2008408880), (2, 1004204440), (4, 502102220), (5, 401681776), (8, 251051110), (10, 200840888), (16, 125525555), (20, 100420444), (40, 50210222), (80, 25105111)]