660340

素因数分解:

$2^2\times 5^1\times {\mathrm{137}}^1\times {\mathrm{241}}^1$

素因数の和:387

約数の個数: 24

約数和(自身を含む): 1402632

約数和(自身を除く): 742292

約数列:

[1, 2, 4, 5, 10, 20, 137, 241, 274, 482, 548, 685, 964, 1205, 1370, 2410, 2740, 4820, 33017, 66034, 132068, 165085, 330170, 660340]

約数ペア:

[(1, 660340), (2, 330170), (4, 165085), (5, 132068), (10, 66034), (20, 33017), (137, 4820), (241, 2740), (274, 2410), (482, 1370), (548, 1205), (685, 964)]