207989620

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{131639}}^1$

素因数の和:131727

約数の個数: 24

約数和(自身を含む): 442310400

約数和(自身を除く): 234320780

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 131639, 263278, 526556, 658195, 1316390, 2632780, 10399481, 20798962, 41597924, 51997405, 103994810, 207989620]

約数ペア:

[(1, 207989620), (2, 103994810), (4, 51997405), (5, 41597924), (10, 20798962), (20, 10399481), (79, 2632780), (158, 1316390), (316, 658195), (395, 526556), (790, 263278), (1580, 131639)]