21052556

素因数分解:

$2^2\times 7^2\times {\mathrm{37}}^1\times {\mathrm{2903}}^1$

素因数の和:2958

約数の個数: 36

約数和(自身を含む): 44030448

約数和(自身を除く): 22977892

約数列:

[1, 2, 4, 7, 14, 28, 37, 49, 74, 98, 148, 196, 259, 518, 1036, 1813, 2903, 3626, 5806, 7252, 11612, 20321, 40642, 81284, 107411, 142247, 214822, 284494, 429644, 568988, 751877, 1503754, 3007508, 5263139, 10526278, 21052556]

約数ペア:

[(1, 21052556), (2, 10526278), (4, 5263139), (7, 3007508), (14, 1503754), (28, 751877), (37, 568988), (49, 429644), (74, 284494), (98, 214822), (148, 142247), (196, 107411), (259, 81284), (518, 40642), (1036, 20321), (1813, 11612), (2903, 7252), (3626, 5806)]