18926375

素因数分解:

$5^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{613}}^1$

素因数の和:660

約数の個数: 32

約数和(自身を含む): 26819520

約数和(自身を除く): 7893145

約数列:

[1, 5, 13, 19, 25, 65, 95, 125, 247, 325, 475, 613, 1235, 1625, 2375, 3065, 6175, 7969, 11647, 15325, 30875, 39845, 58235, 76625, 151411, 199225, 291175, 757055, 996125, 1455875, 3785275, 18926375]

約数ペア:

[(1, 18926375), (5, 3785275), (13, 1455875), (19, 996125), (25, 757055), (65, 291175), (95, 199225), (125, 151411), (247, 76625), (325, 58235), (475, 39845), (613, 30875), (1235, 15325), (1625, 11647), (2375, 7969), (3065, 6175)]