201521991

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{173}}^1\times {\mathrm{3209}}^1$

素因数の和:3407

約数の個数: 24

約数和(自身を含む): 297143280

約数和(自身を除く): 95621289

約数列:

[1, 3, 11, 33, 121, 173, 363, 519, 1903, 3209, 5709, 9627, 20933, 35299, 62799, 105897, 388289, 555157, 1164867, 1665471, 6106727, 18320181, 67173997, 201521991]

約数ペア:

[(1, 201521991), (3, 67173997), (11, 18320181), (33, 6106727), (121, 1665471), (173, 1164867), (363, 555157), (519, 388289), (1903, 105897), (3209, 62799), (5709, 35299), (9627, 20933)]