19287009

素因数分解:

$3^2\times 7^1\times {\mathrm{389}}^1\times {\mathrm{787}}^1$

素因数の和:1189

約数の個数: 24

約数和(自身を含む): 31961280

約数和(自身を除く): 12674271

約数列:

[1, 3, 7, 9, 21, 63, 389, 787, 1167, 2361, 2723, 3501, 5509, 7083, 8169, 16527, 24507, 49581, 306143, 918429, 2143001, 2755287, 6429003, 19287009]

約数ペア:

[(1, 19287009), (3, 6429003), (7, 2755287), (9, 2143001), (21, 918429), (63, 306143), (389, 49581), (787, 24507), (1167, 16527), (2361, 8169), (2723, 7083), (3501, 5509)]