208468515

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{323207}}^1$

素因数の和:323258

約数の個数: 16

約数和(自身を含む): 341307648

約数和(自身を除く): 132839133

約数列:

[1, 3, 5, 15, 43, 129, 215, 645, 323207, 969621, 1616035, 4848105, 13897901, 41693703, 69489505, 208468515]

約数ペア:

[(1, 208468515), (3, 69489505), (5, 41693703), (15, 13897901), (43, 4848105), (129, 1616035), (215, 969621), (645, 323207)]