21056828

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{557}}^1\times {\mathrm{727}}^1$

素因数の和:1301

約数の個数: 24

約数和(自身を含む): 39809952

約数和(自身を除く): 18753124

約数列:

[1, 2, 4, 13, 26, 52, 557, 727, 1114, 1454, 2228, 2908, 7241, 9451, 14482, 18902, 28964, 37804, 404939, 809878, 1619756, 5264207, 10528414, 21056828]

約数ペア:

[(1, 21056828), (2, 10528414), (4, 5264207), (13, 1619756), (26, 809878), (52, 404939), (557, 37804), (727, 28964), (1114, 18902), (1454, 14482), (2228, 9451), (2908, 7241)]