20451016

素因数分解:

$2^3\times {\mathrm{47}}^1\times {\mathrm{109}}^1\times {\mathrm{499}}^1$

素因数の和:661

約数の個数: 32

約数和(自身を含む): 39600000

約数和(自身を除く): 19148984

約数列:

[1, 2, 4, 8, 47, 94, 109, 188, 218, 376, 436, 499, 872, 998, 1996, 3992, 5123, 10246, 20492, 23453, 40984, 46906, 54391, 93812, 108782, 187624, 217564, 435128, 2556377, 5112754, 10225508, 20451016]

約数ペア:

[(1, 20451016), (2, 10225508), (4, 5112754), (8, 2556377), (47, 435128), (94, 217564), (109, 187624), (188, 108782), (218, 93812), (376, 54391), (436, 46906), (499, 40984), (872, 23453), (998, 20492), (1996, 10246), (3992, 5123)]