21320379

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{127}}^1\times {\mathrm{811}}^1$

素因数の和:967

約数の個数: 24

約数和(自身を含む): 32428032

約数和(自身を除く): 11107653

約数列:

[1, 3, 9, 23, 69, 127, 207, 381, 811, 1143, 2433, 2921, 7299, 8763, 18653, 26289, 55959, 102997, 167877, 308991, 926973, 2368931, 7106793, 21320379]

約数ペア:

[(1, 21320379), (3, 7106793), (9, 2368931), (23, 926973), (69, 308991), (127, 167877), (207, 102997), (381, 55959), (811, 26289), (1143, 18653), (2433, 8763), (2921, 7299)]