81163775

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^2\times {\mathrm{3833}}^1$

素因数の和:3872

約数の個数: 36

約数和(自身を含む): 126460656

約数和(自身を除く): 45296881

約数列:

[1, 5, 7, 11, 25, 35, 55, 77, 121, 175, 275, 385, 605, 847, 1925, 3025, 3833, 4235, 19165, 21175, 26831, 42163, 95825, 134155, 210815, 295141, 463793, 670775, 1054075, 1475705, 2318965, 3246551, 7378525, 11594825, 16232755, 81163775]

約数ペア:

[(1, 81163775), (5, 16232755), (7, 11594825), (11, 7378525), (25, 3246551), (35, 2318965), (55, 1475705), (77, 1054075), (121, 670775), (175, 463793), (275, 295141), (385, 210815), (605, 134155), (847, 95825), (1925, 42163), (3025, 26831), (3833, 21175), (4235, 19165)]