19987210

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{28151}}^1$

素因数の和:28229

約数の個数: 16

約数和(自身を含む): 36484992

約数和(自身を除く): 16497782

約数列:

[1, 2, 5, 10, 71, 142, 355, 710, 28151, 56302, 140755, 281510, 1998721, 3997442, 9993605, 19987210]

約数ペア:

[(1, 19987210), (2, 9993605), (5, 3997442), (10, 1998721), (71, 281510), (142, 140755), (355, 56302), (710, 28151)]