158320

素因数分解:

$2^4\times 5^1\times {\mathrm{1979}}^1$

素因数の和:1992

約数の個数: 20

約数和(自身を含む): 368280

約数和(自身を除く): 209960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1979, 3958, 7916, 9895, 15832, 19790, 31664, 39580, 79160, 158320]

約数ペア:

[(1, 158320), (2, 79160), (4, 39580), (5, 31664), (8, 19790), (10, 15832), (16, 9895), (20, 7916), (40, 3958), (80, 1979)]