21981297279

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{397}}^1\times {\mathrm{1085657}}^1$

素因数の和:1086074

約数の個数: 16

約数和(自身を含む): 31110615648

約数和(自身を除く): 9129318369

約数列:

[1, 3, 17, 51, 397, 1191, 6749, 20247, 1085657, 3256971, 18456169, 55368507, 431005829, 1293017487, 7327099093, 21981297279]

約数ペア:

[(1, 21981297279), (3, 7327099093), (17, 1293017487), (51, 431005829), (397, 55368507), (1191, 18456169), (6749, 3256971), (20247, 1085657)]