21293167

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{4327}}^1$

素因数の和:4390

約数の個数: 16

約数和(自身を含む): 26314240

約数和(自身を除く): 5021073

約数列:

[1, 7, 19, 37, 133, 259, 703, 4327, 4921, 30289, 82213, 160099, 575491, 1120693, 3041881, 21293167]

約数ペア:

[(1, 21293167), (7, 3041881), (19, 1120693), (37, 575491), (133, 160099), (259, 82213), (703, 30289), (4327, 4921)]