68902281

素因数分解:

$3^2\times 7^2\times {\mathrm{156241}}^1$

素因数の和:156261

約数の個数: 18

約数和(自身を含む): 115775322

約数和(自身を除く): 46873041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 156241, 468723, 1093687, 1406169, 3281061, 7655809, 9843183, 22967427, 68902281]

約数ペア:

[(1, 68902281), (3, 22967427), (7, 9843183), (9, 7655809), (21, 3281061), (49, 1406169), (63, 1093687), (147, 468723), (441, 156241)]