18978085

素因数分解:

$5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{8093}}^1$

素因数の和:8172

約数の個数: 16

約数和(自身を含む): 26418816

約数和(自身を除く): 7440731

約数列:

[1, 5, 7, 35, 67, 335, 469, 2345, 8093, 40465, 56651, 283255, 542231, 2711155, 3795617, 18978085]

約数ペア:

[(1, 18978085), (5, 3795617), (7, 2711155), (35, 542231), (67, 283255), (335, 56651), (469, 40465), (2345, 8093)]