18981387

素因数分解:

$3^2\times {\mathrm{73}}^1\times {\mathrm{167}}^1\times {\mathrm{173}}^1$

素因数の和:419

約数の個数: 24

約数和(自身を含む): 28121184

約数和(自身を除く): 9139797

約数列:

[1, 3, 9, 73, 167, 173, 219, 501, 519, 657, 1503, 1557, 12191, 12629, 28891, 36573, 37887, 86673, 109719, 113661, 260019, 2109043, 6327129, 18981387]

約数ペア:

[(1, 18981387), (3, 6327129), (9, 2109043), (73, 260019), (167, 113661), (173, 109719), (219, 86673), (501, 37887), (519, 36573), (657, 28891), (1503, 12629), (1557, 12191)]