209215895

素因数分解:

$5^1\times 7^1\times {\mathrm{307}}^1\times {\mathrm{19471}}^1$

素因数の和:19790

約数の個数: 16

約数和(自身を含む): 287874048

約数和(自身を除く): 78658153

約数列:

[1, 5, 7, 35, 307, 1535, 2149, 10745, 19471, 97355, 136297, 681485, 5977597, 29887985, 41843179, 209215895]

約数ペア:

[(1, 209215895), (5, 41843179), (7, 29887985), (35, 5977597), (307, 681485), (1535, 136297), (2149, 97355), (10745, 19471)]