19983472

素因数分解:

$2^4\times {\mathrm{269}}^1\times {\mathrm{4643}}^1$

素因数の和:4920

約数の個数: 20

約数和(自身を含む): 38870280

約数和(自身を除く): 18886808

約数列:

[1, 2, 4, 8, 16, 269, 538, 1076, 2152, 4304, 4643, 9286, 18572, 37144, 74288, 1248967, 2497934, 4995868, 9991736, 19983472]

約数ペア:

[(1, 19983472), (2, 9991736), (4, 4995868), (8, 2497934), (16, 1248967), (269, 74288), (538, 37144), (1076, 18572), (2152, 9286), (4304, 4643)]