19985930

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{68917}}^1$

素因数の和:68953

約数の個数: 16

約数和(自身を含む): 37215720

約数和(自身を除く): 17229790

約数列:

[1, 2, 5, 10, 29, 58, 145, 290, 68917, 137834, 344585, 689170, 1998593, 3997186, 9992965, 19985930]

約数ペア:

[(1, 19985930), (2, 9992965), (5, 3997186), (10, 1998593), (29, 689170), (58, 344585), (145, 137834), (290, 68917)]