20078320

素因数分解:

$2^4\times 5^1\times {\mathrm{250979}}^1$

素因数の和:250992

約数の個数: 20

約数和(自身を含む): 46682280

約数和(自身を除く): 26603960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 250979, 501958, 1003916, 1254895, 2007832, 2509790, 4015664, 5019580, 10039160, 20078320]

約数ペア:

[(1, 20078320), (2, 10039160), (4, 5019580), (5, 4015664), (8, 2509790), (10, 2007832), (16, 1254895), (20, 1003916), (40, 501958), (80, 250979)]