21481215

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{204583}}^1$

素因数の和:204598

約数の個数: 16

約数和(自身を含む): 39280128

約数和(自身を除く): 17798913

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 204583, 613749, 1022915, 1432081, 3068745, 4296243, 7160405, 21481215]

約数ペア:

[(1, 21481215), (3, 7160405), (5, 4296243), (7, 3068745), (15, 1432081), (21, 1022915), (35, 613749), (105, 204583)]