21827445

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^2\times {\mathrm{787}}^1$

素因数の和:881

約数の個数: 24

約数和(自身を含む): 35800416

約数和(自身を除く): 13972971

約数列:

[1, 3, 5, 15, 43, 129, 215, 645, 787, 1849, 2361, 3935, 5547, 9245, 11805, 27735, 33841, 101523, 169205, 507615, 1455163, 4365489, 7275815, 21827445]

約数ペア:

[(1, 21827445), (3, 7275815), (5, 4365489), (15, 1455163), (43, 507615), (129, 169205), (215, 101523), (645, 33841), (787, 27735), (1849, 11805), (2361, 9245), (3935, 5547)]