8639964

素因数分解:

$2^2\times 3^2\times {\mathrm{239999}}^1$

素因数の和:240009

約数の個数: 18

約数和(自身を含む): 21840000

約数和(自身を除く): 13200036

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 239999, 479998, 719997, 959996, 1439994, 2159991, 2879988, 4319982, 8639964]

約数ペア:

[(1, 8639964), (2, 4319982), (3, 2879988), (4, 2159991), (6, 1439994), (9, 959996), (12, 719997), (18, 479998), (36, 239999)]