21014745076

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{31086901}}^1$

素因数の和:31086931

約数の個数: 18

約数和(自身を含む): 39822321462

約数和(自身を除く): 18807576386

約数列:

[1, 2, 4, 13, 26, 52, 169, 338, 676, 31086901, 62173802, 124347604, 404129713, 808259426, 1616518852, 5253686269, 10507372538, 21014745076]

約数ペア:

[(1, 21014745076), (2, 10507372538), (4, 5253686269), (13, 1616518852), (26, 808259426), (52, 404129713), (169, 124347604), (338, 62173802), (676, 31086901)]