128399425

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{66701}}^1$

素因数の和:66729

約数の個数: 24

約数和(自身を含む): 198505152

約数和(自身を除く): 70105727

約数列:

[1, 5, 7, 11, 25, 35, 55, 77, 175, 275, 385, 1925, 66701, 333505, 466907, 733711, 1667525, 2334535, 3668555, 5135977, 11672675, 18342775, 25679885, 128399425]

約数ペア:

[(1, 128399425), (5, 25679885), (7, 18342775), (11, 11672675), (25, 5135977), (35, 3668555), (55, 2334535), (77, 1667525), (175, 733711), (275, 466907), (385, 333505), (1925, 66701)]