81681894

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{648269}}^1$

素因数の和:648284

約数の個数: 24

約数和(自身を含む): 202260240

約数和(自身を除く): 120578346

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 648269, 1296538, 1944807, 3889614, 4537883, 5834421, 9075766, 11668842, 13613649, 27227298, 40840947, 81681894]

約数ペア:

[(1, 81681894), (2, 40840947), (3, 27227298), (6, 13613649), (7, 11668842), (9, 9075766), (14, 5834421), (18, 4537883), (21, 3889614), (42, 1944807), (63, 1296538), (126, 648269)]