21199221

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{127}}^1\times {\mathrm{1091}}^1$

素因数の和:1241

約数の個数: 24

約数和(自身を含む): 32707584

約数和(自身を除く): 11508363

約数列:

[1, 3, 9, 17, 51, 127, 153, 381, 1091, 1143, 2159, 3273, 6477, 9819, 18547, 19431, 55641, 138557, 166923, 415671, 1247013, 2355469, 7066407, 21199221]

約数ペア:

[(1, 21199221), (3, 7066407), (9, 2355469), (17, 1247013), (51, 415671), (127, 166923), (153, 138557), (381, 55641), (1091, 19431), (1143, 18547), (2159, 9819), (3273, 6477)]