998018721

素因数分解:

$3^2\times 7^2\times {\mathrm{2263081}}^1$

素因数の和:2263101

約数の個数: 18

約数和(自身を含む): 1676943762

約数和(自身を除く): 678925041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 2263081, 6789243, 15841567, 20367729, 47524701, 110890969, 142574103, 332672907, 998018721]

約数ペア:

[(1, 998018721), (3, 332672907), (7, 142574103), (9, 110890969), (21, 47524701), (49, 20367729), (63, 15841567), (147, 6789243), (441, 2263081)]