21919263

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{4447}}^1$

素因数の和:4534

約数の個数: 16

約数和(自身を含む): 30744576

約数和(自身を除く): 8825313

約数列:

[1, 3, 31, 53, 93, 159, 1643, 4447, 4929, 13341, 137857, 235691, 413571, 707073, 7306421, 21919263]

約数ペア:

[(1, 21919263), (3, 7306421), (31, 707073), (53, 413571), (93, 235691), (159, 137857), (1643, 13341), (4447, 4929)]