21689435

素因数分解:

$5^1\times {\mathrm{71}}^1\times {\mathrm{107}}^1\times {\mathrm{571}}^1$

素因数の和:754

約数の個数: 16

約数和(自身を含む): 26687232

約数和(自身を除く): 4997797

約数列:

[1, 5, 71, 107, 355, 535, 571, 2855, 7597, 37985, 40541, 61097, 202705, 305485, 4337887, 21689435]

約数ペア:

[(1, 21689435), (5, 4337887), (71, 305485), (107, 202705), (355, 61097), (535, 40541), (571, 37985), (2855, 7597)]