20106640

素因数分解:

$2^4\times 5^1\times {\mathrm{127}}^1\times {\mathrm{1979}}^1$

素因数の和:2119

約数の個数: 40

約数和(自身を含む): 47139840

約数和(自身を除く): 27033200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 127, 254, 508, 635, 1016, 1270, 1979, 2032, 2540, 3958, 5080, 7916, 9895, 10160, 15832, 19790, 31664, 39580, 79160, 158320, 251333, 502666, 1005332, 1256665, 2010664, 2513330, 4021328, 5026660, 10053320, 20106640]

約数ペア:

[(1, 20106640), (2, 10053320), (4, 5026660), (5, 4021328), (8, 2513330), (10, 2010664), (16, 1256665), (20, 1005332), (40, 502666), (80, 251333), (127, 158320), (254, 79160), (508, 39580), (635, 31664), (1016, 19790), (1270, 15832), (1979, 10160), (2032, 9895), (2540, 7916), (3958, 5080)]