19945818

素因数分解:

$2^1\times 3^3\times {\mathrm{431}}^1\times {\mathrm{857}}^1$

素因数の和:1299

約数の個数: 32

約数和(自身を含む): 44478720

約数和(自身を除く): 24532902

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 431, 857, 862, 1293, 1714, 2571, 2586, 3879, 5142, 7713, 7758, 11637, 15426, 23139, 23274, 46278, 369367, 738734, 1108101, 2216202, 3324303, 6648606, 9972909, 19945818]

約数ペア:

[(1, 19945818), (2, 9972909), (3, 6648606), (6, 3324303), (9, 2216202), (18, 1108101), (27, 738734), (54, 369367), (431, 46278), (857, 23274), (862, 23139), (1293, 15426), (1714, 11637), (2571, 7758), (2586, 7713), (3879, 5142)]