19986488

素因数分解:

$2^3\times {\mathrm{991}}^1\times {\mathrm{2521}}^1$

素因数の和:3518

約数の個数: 16

約数和(自身を含む): 37527360

約数和(自身を除く): 17540872

約数列:

[1, 2, 4, 8, 991, 1982, 2521, 3964, 5042, 7928, 10084, 20168, 2498311, 4996622, 9993244, 19986488]

約数ペア:

[(1, 19986488), (2, 9993244), (4, 4996622), (8, 2498311), (991, 20168), (1982, 10084), (2521, 7928), (3964, 5042)]