208996925

素因数分解:

$5^2\times {\mathrm{137}}^1\times {\mathrm{139}}^1\times {\mathrm{439}}^1$

素因数の和:725

約数の個数: 24

約数和(自身を含む): 263524800

約数和(自身を除く): 54527875

約数列:

[1, 5, 25, 137, 139, 439, 685, 695, 2195, 3425, 3475, 10975, 19043, 60143, 61021, 95215, 300715, 305105, 476075, 1503575, 1525525, 8359877, 41799385, 208996925]

約数ペア:

[(1, 208996925), (5, 41799385), (25, 8359877), (137, 1525525), (139, 1503575), (439, 476075), (685, 305105), (695, 300715), (2195, 95215), (3425, 61021), (3475, 60143), (10975, 19043)]