128217500

素因数分解:

$2^2\times 5^4\times {\mathrm{51287}}^1$

素因数の和:51311

約数の個数: 30

約数和(自身を含む): 280391496

約数和(自身を除く): 152173996

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 250, 500, 625, 1250, 2500, 51287, 102574, 205148, 256435, 512870, 1025740, 1282175, 2564350, 5128700, 6410875, 12821750, 25643500, 32054375, 64108750, 128217500]

約数ペア:

[(1, 128217500), (2, 64108750), (4, 32054375), (5, 25643500), (10, 12821750), (20, 6410875), (25, 5128700), (50, 2564350), (100, 1282175), (125, 1025740), (250, 512870), (500, 256435), (625, 205148), (1250, 102574), (2500, 51287)]