21782355

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{12203}}^1$

素因数の和:12235

約数の個数: 32

約数和(自身を含む): 42177024

約数和(自身を除く): 20394669

約数列:

[1, 3, 5, 7, 15, 17, 21, 35, 51, 85, 105, 119, 255, 357, 595, 1785, 12203, 36609, 61015, 85421, 183045, 207451, 256263, 427105, 622353, 1037255, 1281315, 1452157, 3111765, 4356471, 7260785, 21782355]

約数ペア:

[(1, 21782355), (3, 7260785), (5, 4356471), (7, 3111765), (15, 1452157), (17, 1281315), (21, 1037255), (35, 622353), (51, 427105), (85, 256263), (105, 207451), (119, 183045), (255, 85421), (357, 61015), (595, 36609), (1785, 12203)]