209961905

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{307}}^1\times {\mathrm{3181}}^1$

素因数の和:3536

約数の個数: 16

約数和(自身を含む): 258734784

約数和(自身を除く): 48772879

約数列:

[1, 5, 43, 215, 307, 1535, 3181, 13201, 15905, 66005, 136783, 683915, 976567, 4882835, 41992381, 209961905]

約数ペア:

[(1, 209961905), (5, 41992381), (43, 4882835), (215, 976567), (307, 683915), (1535, 136783), (3181, 66005), (13201, 15905)]