388971580

素因数分解:

$2^2\times 5^1\times {\mathrm{709}}^1\times {\mathrm{27431}}^1$

素因数の和:28149

約数の個数: 24

約数和(自身を含む): 818022240

約数和(自身を除く): 429050660

約数列:

[1, 2, 4, 5, 10, 20, 709, 1418, 2836, 3545, 7090, 14180, 27431, 54862, 109724, 137155, 274310, 548620, 19448579, 38897158, 77794316, 97242895, 194485790, 388971580]

約数ペア:

[(1, 388971580), (2, 194485790), (4, 97242895), (5, 77794316), (10, 38897158), (20, 19448579), (709, 548620), (1418, 274310), (2836, 137155), (3545, 109724), (7090, 54862), (14180, 27431)]