261053847

素因数分解:

$3^4\times {\mathrm{41}}^1\times {\mathrm{78607}}^1$

素因数の和:78660

約数の個数: 20

約数和(自身を含む): 399485856

約数和(自身を除く): 138432009

約数列:

[1, 3, 9, 27, 41, 81, 123, 369, 1107, 3321, 78607, 235821, 707463, 2122389, 3222887, 6367167, 9668661, 29005983, 87017949, 261053847]

約数ペア:

[(1, 261053847), (3, 87017949), (9, 29005983), (27, 9668661), (41, 6367167), (81, 3222887), (123, 2122389), (369, 707463), (1107, 235821), (3321, 78607)]