20639742

素因数分解:

$2^1\times 3^1\times {\mathrm{43}}^1\times {\mathrm{79999}}^1$

素因数の和:80047

約数の個数: 16

約数和(自身を含む): 42240000

約数和(自身を除く): 21600258

約数列:

[1, 2, 3, 6, 43, 86, 129, 258, 79999, 159998, 239997, 479994, 3439957, 6879914, 10319871, 20639742]

約数ペア:

[(1, 20639742), (2, 10319871), (3, 6879914), (6, 3439957), (43, 479994), (86, 239997), (129, 159998), (258, 79999)]