19806320

素因数分解:

$2^4\times 5^1\times {\mathrm{247579}}^1$

素因数の和:247592

約数の個数: 20

約数和(自身を含む): 46049880

約数和(自身を除く): 26243560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 247579, 495158, 990316, 1237895, 1980632, 2475790, 3961264, 4951580, 9903160, 19806320]

約数ペア:

[(1, 19806320), (2, 9903160), (4, 4951580), (5, 3961264), (8, 2475790), (10, 1980632), (16, 1237895), (20, 990316), (40, 495158), (80, 247579)]