81621155

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{19273}}^1$

素因数の和:19307

約数の個数: 24

約数和(自身を含む): 123045216

約数和(自身を除く): 41424061

約数列:

[1, 5, 7, 11, 35, 55, 77, 121, 385, 605, 847, 4235, 19273, 96365, 134911, 212003, 674555, 1060015, 1484021, 2332033, 7420105, 11660165, 16324231, 81621155]

約数ペア:

[(1, 81621155), (5, 16324231), (7, 11660165), (11, 7420105), (35, 2332033), (55, 1484021), (77, 1060015), (121, 674555), (385, 212003), (605, 134911), (847, 96365), (4235, 19273)]