2781891

素因数分解:

$3^3\times 7^1\times {\mathrm{41}}^1\times {\mathrm{359}}^1$

素因数の和:416

約数の個数: 32

約数和(自身を含む): 4838400

約数和(自身を除く): 2056509

約数列:

[1, 3, 7, 9, 21, 27, 41, 63, 123, 189, 287, 359, 369, 861, 1077, 1107, 2513, 2583, 3231, 7539, 7749, 9693, 14719, 22617, 44157, 67851, 103033, 132471, 309099, 397413, 927297, 2781891]

約数ペア:

[(1, 2781891), (3, 927297), (7, 397413), (9, 309099), (21, 132471), (27, 103033), (41, 67851), (63, 44157), (123, 22617), (189, 14719), (287, 9693), (359, 7749), (369, 7539), (861, 3231), (1077, 2583), (1107, 2513)]