18693921

素因数分解:

$3^1\times {\mathrm{47}}^1\times {\mathrm{197}}^1\times {\mathrm{673}}^1$

素因数の和:920

約数の個数: 16

約数和(自身を含む): 25622784

約数和(自身を除く): 6928863

約数列:

[1, 3, 47, 141, 197, 591, 673, 2019, 9259, 27777, 31631, 94893, 132581, 397743, 6231307, 18693921]

約数ペア:

[(1, 18693921), (3, 6231307), (47, 397743), (141, 132581), (197, 94893), (591, 31631), (673, 27777), (2019, 9259)]