18872931

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{81701}}^1$

素因数の和:81722

約数の個数: 16

約数和(自身を含む): 31373568

約数和(自身を除く): 12500637

約数列:

[1, 3, 7, 11, 21, 33, 77, 231, 81701, 245103, 571907, 898711, 1715721, 2696133, 6290977, 18872931]

約数ペア:

[(1, 18872931), (3, 6290977), (7, 2696133), (11, 1715721), (21, 898711), (33, 571907), (77, 245103), (231, 81701)]