90128875

素因数分解:

$5^3\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{277}}^1$

素因数の和:448

約数の個数: 32

約数和(自身を含む): 119695680

約数和(自身を除く): 29566805

約数列:

[1, 5, 19, 25, 95, 125, 137, 277, 475, 685, 1385, 2375, 2603, 3425, 5263, 6925, 13015, 17125, 26315, 34625, 37949, 65075, 131575, 189745, 325375, 657875, 721031, 948725, 3605155, 4743625, 18025775, 90128875]

約数ペア:

[(1, 90128875), (5, 18025775), (19, 4743625), (25, 3605155), (95, 948725), (125, 721031), (137, 657875), (277, 325375), (475, 189745), (685, 131575), (1385, 65075), (2375, 37949), (2603, 34625), (3425, 26315), (5263, 17125), (6925, 13015)]