156968217

素因数分解:

$3^2\times 7^2\times {\mathrm{355937}}^1$

素因数の和:355957

約数の個数: 18

約数和(自身を含む): 263750058

約数和(自身を除く): 106781841

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 355937, 1067811, 2491559, 3203433, 7474677, 17440913, 22424031, 52322739, 156968217]

約数ペア:

[(1, 156968217), (3, 52322739), (7, 22424031), (9, 17440913), (21, 7474677), (49, 3203433), (63, 2491559), (147, 1067811), (441, 355937)]