21091252

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{57943}}^1$

素因数の和:57967

約数の個数: 24

約数和(自身を含む): 45428096

約数和(自身を除く): 24336844

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 91, 182, 364, 57943, 115886, 231772, 405601, 753259, 811202, 1506518, 1622404, 3013036, 5272813, 10545626, 21091252]

約数ペア:

[(1, 21091252), (2, 10545626), (4, 5272813), (7, 3013036), (13, 1622404), (14, 1506518), (26, 811202), (28, 753259), (52, 405601), (91, 231772), (182, 115886), (364, 57943)]