21939547

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{293}}^1\times {\mathrm{563}}^1$

素因数の和:882

約数の個数: 16

約数和(自身を含む): 26530560

約数和(自身を除く): 4591013

約数列:

[1, 7, 19, 133, 293, 563, 2051, 3941, 5567, 10697, 38969, 74879, 164959, 1154713, 3134221, 21939547]

約数ペア:

[(1, 21939547), (7, 3134221), (19, 1154713), (133, 164959), (293, 74879), (563, 38969), (2051, 10697), (3941, 5567)]