20887016

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{1409}}^1$

素因数の和:1541

約数の個数: 32

約数和(自身を含む): 41877000

約数和(自身を除く): 20989984

約数列:

[1, 2, 4, 8, 17, 34, 68, 109, 136, 218, 436, 872, 1409, 1853, 2818, 3706, 5636, 7412, 11272, 14824, 23953, 47906, 95812, 153581, 191624, 307162, 614324, 1228648, 2610877, 5221754, 10443508, 20887016]

約数ペア:

[(1, 20887016), (2, 10443508), (4, 5221754), (8, 2610877), (17, 1228648), (34, 614324), (68, 307162), (109, 191624), (136, 153581), (218, 95812), (436, 47906), (872, 23953), (1409, 14824), (1853, 11272), (2818, 7412), (3706, 5636)]