19999998

素因数分解:

$2^1\times 3^2\times {\mathrm{239}}^1\times {\mathrm{4649}}^1$

素因数の和:4896

約数の個数: 24

約数和(自身を含む): 43524000

約数和(自身を除く): 23524002

約数列:

[1, 2, 3, 6, 9, 18, 239, 478, 717, 1434, 2151, 4302, 4649, 9298, 13947, 27894, 41841, 83682, 1111111, 2222222, 3333333, 6666666, 9999999, 19999998]

約数ペア:

[(1, 19999998), (2, 9999999), (3, 6666666), (6, 3333333), (9, 2222222), (18, 1111111), (239, 83682), (478, 41841), (717, 27894), (1434, 13947), (2151, 9298), (4302, 4649)]