21737585

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{107}}^1\times {\mathrm{991}}^1$

素因数の和:1144

約数の個数: 16

約数和(自身を含む): 26998272

約数和(自身を除く): 5260687

約数列:

[1, 5, 41, 107, 205, 535, 991, 4387, 4955, 21935, 40631, 106037, 203155, 530185, 4347517, 21737585]

約数ペア:

[(1, 21737585), (5, 4347517), (41, 530185), (107, 203155), (205, 106037), (535, 40631), (991, 21935), (4387, 4955)]