18719922

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{239999}}^1$

素因数の和:240017

約数の個数: 16

約数和(自身を含む): 40320000

約数和(自身を除く): 21600078

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 239999, 479998, 719997, 1439994, 3119987, 6239974, 9359961, 18719922]

約数ペア:

[(1, 18719922), (2, 9359961), (3, 6239974), (6, 3119987), (13, 1439994), (26, 719997), (39, 479998), (78, 239999)]