157609520

素因数分解:

$2^4\times 5^1\times {\mathrm{1970119}}^1$

素因数の和:1970132

約数の個数: 20

約数和(自身を含む): 366442320

約数和(自身を除く): 208832800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1970119, 3940238, 7880476, 9850595, 15760952, 19701190, 31521904, 39402380, 78804760, 157609520]

約数ペア:

[(1, 157609520), (2, 78804760), (4, 39402380), (5, 31521904), (8, 19701190), (10, 15760952), (16, 9850595), (20, 7880476), (40, 3940238), (80, 1970119)]