21002852

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{403901}}^1$

素因数の和:403918

約数の個数: 12

約数和(自身を含む): 39582396

約数和(自身を除く): 18579544

約数列:

[1, 2, 4, 13, 26, 52, 403901, 807802, 1615604, 5250713, 10501426, 21002852]

約数ペア:

[(1, 21002852), (2, 10501426), (4, 5250713), (13, 1615604), (26, 807802), (52, 403901)]