208066640

素因数分解:

$2^4\times 5^1\times {\mathrm{127}}^1\times {\mathrm{20479}}^1$

素因数の和:20619

約数の個数: 40

約数和(自身を含む): 487587840

約数和(自身を除く): 279521200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 127, 254, 508, 635, 1016, 1270, 2032, 2540, 5080, 10160, 20479, 40958, 81916, 102395, 163832, 204790, 327664, 409580, 819160, 1638320, 2600833, 5201666, 10403332, 13004165, 20806664, 26008330, 41613328, 52016660, 104033320, 208066640]

約数ペア:

[(1, 208066640), (2, 104033320), (4, 52016660), (5, 41613328), (8, 26008330), (10, 20806664), (16, 13004165), (20, 10403332), (40, 5201666), (80, 2600833), (127, 1638320), (254, 819160), (508, 409580), (635, 327664), (1016, 204790), (1270, 163832), (2032, 102395), (2540, 81916), (5080, 40958), (10160, 20479)]