21809283

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{317}}^1$

素因数の和:427

約数の個数: 32

約数和(自身を含む): 32970240

約数和(自身を除く): 11160957

約数列:

[1, 3, 17, 19, 51, 57, 71, 213, 317, 323, 951, 969, 1207, 1349, 3621, 4047, 5389, 6023, 16167, 18069, 22507, 22933, 67521, 68799, 102391, 307173, 382619, 427633, 1147857, 1282899, 7269761, 21809283]

約数ペア:

[(1, 21809283), (3, 7269761), (17, 1282899), (19, 1147857), (51, 427633), (57, 382619), (71, 307173), (213, 102391), (317, 68799), (323, 67521), (951, 22933), (969, 22507), (1207, 18069), (1349, 16167), (3621, 6023), (4047, 5389)]