261661519

素因数分解:

$7^2\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{3121}}^1$

素因数の和:3223

約数の個数: 24

約数和(自身を含む): 320317200

約数和(自身を除く): 58655681

約数列:

[1, 7, 29, 49, 59, 203, 413, 1421, 1711, 2891, 3121, 11977, 21847, 83839, 90509, 152929, 184139, 633563, 1288973, 4434941, 5340031, 9022811, 37380217, 261661519]

約数ペア:

[(1, 261661519), (7, 37380217), (29, 9022811), (49, 5340031), (59, 4434941), (203, 1288973), (413, 633563), (1421, 184139), (1711, 152929), (2891, 90509), (3121, 83839), (11977, 21847)]