21890463

素因数分解:

$3^1\times 7^1\times {\mathrm{251}}^1\times {\mathrm{4153}}^1$

素因数の和:4414

約数の個数: 16

約数和(自身を含む): 33497856

約数和(自身を除く): 11607393

約数列:

[1, 3, 7, 21, 251, 753, 1757, 4153, 5271, 12459, 29071, 87213, 1042403, 3127209, 7296821, 21890463]

約数ペア:

[(1, 21890463), (3, 7296821), (7, 3127209), (21, 1042403), (251, 87213), (753, 29071), (1757, 12459), (4153, 5271)]