21587797

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{491}}^1\times {\mathrm{571}}^1$

素因数の和:1080

約数の個数: 16

約数和(自身を含む): 27016704

約数和(自身を除く): 5428907

約数列:

[1, 7, 11, 77, 491, 571, 3437, 3997, 5401, 6281, 37807, 43967, 280361, 1962527, 3083971, 21587797]

約数ペア:

[(1, 21587797), (7, 3083971), (11, 1962527), (77, 280361), (491, 43967), (571, 37807), (3437, 6281), (3997, 5401)]