19910635

素因数分解:

$5^1\times {\mathrm{89}}^1\times {\mathrm{101}}^1\times {\mathrm{443}}^1$

素因数の和:638

約数の個数: 16

約数和(自身を含む): 24455520

約数和(自身を除く): 4544885

約数列:

[1, 5, 89, 101, 443, 445, 505, 2215, 8989, 39427, 44743, 44945, 197135, 223715, 3982127, 19910635]

約数ペア:

[(1, 19910635), (5, 3982127), (89, 223715), (101, 197135), (443, 44945), (445, 44743), (505, 39427), (2215, 8989)]