207855305

素因数分解:

$5^1\times 7^2\times {\mathrm{397}}^1\times {\mathrm{2137}}^1$

素因数の和:2553

約数の個数: 24

約数和(自身を含む): 291016008

約数和(自身を除く): 83160703

約数列:

[1, 5, 7, 35, 49, 245, 397, 1985, 2137, 2779, 10685, 13895, 14959, 19453, 74795, 97265, 104713, 523565, 848389, 4241945, 5938723, 29693615, 41571061, 207855305]

約数ペア:

[(1, 207855305), (5, 41571061), (7, 29693615), (35, 5938723), (49, 4241945), (245, 848389), (397, 523565), (1985, 104713), (2137, 97265), (2779, 74795), (10685, 19453), (13895, 14959)]