21378495

素因数分解:

$3^1\times 5^1\times {\mathrm{373}}^1\times {\mathrm{3821}}^1$

素因数の和:4202

約数の個数: 16

約数和(自身を含む): 34306272

約数和(自身を除く): 12927777

約数列:

[1, 3, 5, 15, 373, 1119, 1865, 3821, 5595, 11463, 19105, 57315, 1425233, 4275699, 7126165, 21378495]

約数ペア:

[(1, 21378495), (3, 7126165), (5, 4275699), (15, 1425233), (373, 57315), (1119, 19105), (1865, 11463), (3821, 5595)]