19904055

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{30859}}^1$

素因数の和:30910

約数の個数: 16

約数和(自身を含む): 32588160

約数和(自身を除く): 12684105

約数列:

[1, 3, 5, 15, 43, 129, 215, 645, 30859, 92577, 154295, 462885, 1326937, 3980811, 6634685, 19904055]

約数ペア:

[(1, 19904055), (3, 6634685), (5, 3980811), (15, 1326937), (43, 462885), (129, 154295), (215, 92577), (645, 30859)]