8438440

素因数分解:

$2^3\times 5^1\times {\mathrm{210961}}^1$

素因数の和:210972

約数の個数: 16

約数和(自身を含む): 18986580

約数和(自身を除く): 10548140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 210961, 421922, 843844, 1054805, 1687688, 2109610, 4219220, 8438440]

約数ペア:

[(1, 8438440), (2, 4219220), (4, 2109610), (5, 1687688), (8, 1054805), (10, 843844), (20, 421922), (40, 210961)]