18006440

素因数分解:

$2^3\times 5^1\times {\mathrm{450161}}^1$

素因数の和:450172

約数の個数: 16

約数和(自身を含む): 40514580

約数和(自身を除く): 22508140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 450161, 900322, 1800644, 2250805, 3601288, 4501610, 9003220, 18006440]

約数ペア:

[(1, 18006440), (2, 9003220), (4, 4501610), (5, 3601288), (8, 2250805), (10, 1800644), (20, 900322), (40, 450161)]