21355215

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{203383}}^1$

素因数の和:203398

約数の個数: 16

約数和(自身を含む): 39049728

約数和(自身を除く): 17694513

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 203383, 610149, 1016915, 1423681, 3050745, 4271043, 7118405, 21355215]

約数ペア:

[(1, 21355215), (3, 7118405), (5, 4271043), (7, 3050745), (15, 1423681), (21, 1016915), (35, 610149), (105, 203383)]