168490820

素因数分解:

$2^2\times 5^1\times {\mathrm{137}}^1\times {\mathrm{61493}}^1$

素因数の和:61639

約数の個数: 24

約数和(自身を含む): 356419224

約数和(自身を除く): 187928404

約数列:

[1, 2, 4, 5, 10, 20, 137, 274, 548, 685, 1370, 2740, 61493, 122986, 245972, 307465, 614930, 1229860, 8424541, 16849082, 33698164, 42122705, 84245410, 168490820]

約数ペア:

[(1, 168490820), (2, 84245410), (4, 42122705), (5, 33698164), (10, 16849082), (20, 8424541), (137, 1229860), (274, 614930), (548, 307465), (685, 245972), (1370, 122986), (2740, 61493)]