20548025

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{181}}^1\times {\mathrm{239}}^1$

素因数の和:449

約数の個数: 24

約数和(自身を含む): 27081600

約数和(自身を除く): 6533575

約数列:

[1, 5, 19, 25, 95, 181, 239, 475, 905, 1195, 3439, 4525, 4541, 5975, 17195, 22705, 43259, 85975, 113525, 216295, 821921, 1081475, 4109605, 20548025]

約数ペア:

[(1, 20548025), (5, 4109605), (19, 1081475), (25, 821921), (95, 216295), (181, 113525), (239, 85975), (475, 43259), (905, 22705), (1195, 17195), (3439, 5975), (4525, 4541)]