203965480

素因数分解:

$2^3\times 5^1\times {\mathrm{257}}^1\times {\mathrm{19841}}^1$

素因数の和:20109

約数の個数: 32

約数和(自身を含む): 460731240

約数和(自身を除く): 256765760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 257, 514, 1028, 1285, 2056, 2570, 5140, 10280, 19841, 39682, 79364, 99205, 158728, 198410, 396820, 793640, 5099137, 10198274, 20396548, 25495685, 40793096, 50991370, 101982740, 203965480]

約数ペア:

[(1, 203965480), (2, 101982740), (4, 50991370), (5, 40793096), (8, 25495685), (10, 20396548), (20, 10198274), (40, 5099137), (257, 793640), (514, 396820), (1028, 198410), (1285, 158728), (2056, 99205), (2570, 79364), (5140, 39682), (10280, 19841)]