21534255

素因数分解:

$3^4\times 5^1\times {\mathrm{53171}}^1$

素因数の和:53188

約数の個数: 20

約数和(自身を含む): 38602872

約数和(自身を除く): 17068617

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 53171, 159513, 265855, 478539, 797565, 1435617, 2392695, 4306851, 7178085, 21534255]

約数ペア:

[(1, 21534255), (3, 7178085), (5, 4306851), (9, 2392695), (15, 1435617), (27, 797565), (45, 478539), (81, 265855), (135, 159513), (405, 53171)]