51127540

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{109}}^1\times {\mathrm{499}}^1$

素因数の和:664

約数の個数: 48

約数和(自身を含む): 110880000

約数和(自身を除く): 59752460

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 109, 188, 218, 235, 436, 470, 499, 545, 940, 998, 1090, 1996, 2180, 2495, 4990, 5123, 9980, 10246, 20492, 23453, 25615, 46906, 51230, 54391, 93812, 102460, 108782, 117265, 217564, 234530, 271955, 469060, 543910, 1087820, 2556377, 5112754, 10225508, 12781885, 25563770, 51127540]

約数ペア:

[(1, 51127540), (2, 25563770), (4, 12781885), (5, 10225508), (10, 5112754), (20, 2556377), (47, 1087820), (94, 543910), (109, 469060), (188, 271955), (218, 234530), (235, 217564), (436, 117265), (470, 108782), (499, 102460), (545, 93812), (940, 54391), (998, 51230), (1090, 46906), (1996, 25615), (2180, 23453), (2495, 20492), (4990, 10246), (5123, 9980)]