20732781

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{109}}^1$

素因数の和:249

約数の個数: 32

約数和(自身を含む): 30412800

約数和(自身を除く): 9680019

約数列:

[1, 3, 19, 47, 57, 71, 109, 141, 213, 327, 893, 1349, 2071, 2679, 3337, 4047, 5123, 6213, 7739, 10011, 15369, 23217, 63403, 97337, 147041, 190209, 292011, 363733, 441123, 1091199, 6910927, 20732781]

約数ペア:

[(1, 20732781), (3, 6910927), (19, 1091199), (47, 441123), (57, 363733), (71, 292011), (109, 190209), (141, 147041), (213, 97337), (327, 63403), (893, 23217), (1349, 15369), (2071, 10011), (2679, 7739), (3337, 6213), (4047, 5123)]