21219247

素因数分解:

$7^1\times {\mathrm{17}}^3\times {\mathrm{617}}^1$

素因数の和:675

約数の個数: 16

約数和(自身を含む): 25807680

約数和(自身を除く): 4588433

約数列:

[1, 7, 17, 119, 289, 617, 2023, 4319, 4913, 10489, 34391, 73423, 178313, 1248191, 3031321, 21219247]

約数ペア:

[(1, 21219247), (7, 3031321), (17, 1248191), (119, 178313), (289, 73423), (617, 34391), (2023, 10489), (4319, 4913)]