2690680

素因数分解:

$2^3\times 5^1\times {\mathrm{137}}^1\times {\mathrm{491}}^1$

素因数の和:639

約数の個数: 32

約数和(自身を含む): 6110640

約数和(自身を除く): 3419960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 137, 274, 491, 548, 685, 982, 1096, 1370, 1964, 2455, 2740, 3928, 4910, 5480, 9820, 19640, 67267, 134534, 269068, 336335, 538136, 672670, 1345340, 2690680]

約数ペア:

[(1, 2690680), (2, 1345340), (4, 672670), (5, 538136), (8, 336335), (10, 269068), (20, 134534), (40, 67267), (137, 19640), (274, 9820), (491, 5480), (548, 4910), (685, 3928), (982, 2740), (1096, 2455), (1370, 1964)]