20974689

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{5333}}^1$

素因数の和:5381

約数の個数: 24

約数和(自身を含む): 33284160

約数和(自身を除く): 12309471

約数列:

[1, 3, 9, 19, 23, 57, 69, 171, 207, 437, 1311, 3933, 5333, 15999, 47997, 101327, 122659, 303981, 367977, 911943, 1103931, 2330521, 6991563, 20974689]

約数ペア:

[(1, 20974689), (3, 6991563), (9, 2330521), (19, 1103931), (23, 911943), (57, 367977), (69, 303981), (171, 122659), (207, 101327), (437, 47997), (1311, 15999), (3933, 5333)]