19809710

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{27901}}^1$

素因数の和:27979

約数の個数: 16

約数和(自身を含む): 36160992

約数和(自身を除く): 16351282

約数列:

[1, 2, 5, 10, 71, 142, 355, 710, 27901, 55802, 139505, 279010, 1980971, 3961942, 9904855, 19809710]

約数ペア:

[(1, 19809710), (2, 9904855), (5, 3961942), (10, 1980971), (71, 279010), (142, 139505), (355, 55802), (710, 27901)]