18122800

素因数分解:

$2^4\times 5^2\times {\mathrm{45307}}^1$

素因数の和:45325

約数の個数: 30

約数和(自身を含む): 43540988

約数和(自身を除く): 25418188

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 45307, 90614, 181228, 226535, 362456, 453070, 724912, 906140, 1132675, 1812280, 2265350, 3624560, 4530700, 9061400, 18122800]

約数ペア:

[(1, 18122800), (2, 9061400), (4, 4530700), (5, 3624560), (8, 2265350), (10, 1812280), (16, 1132675), (20, 906140), (25, 724912), (40, 453070), (50, 362456), (80, 226535), (100, 181228), (200, 90614), (400, 45307)]