20803959

素因数分解:

$3^5\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{181}}^1$

素因数の和:250

約数の個数: 48

約数和(自身を含む): 34978944

約数和(自身を除く): 14174985

約数列:

[1, 3, 9, 11, 27, 33, 43, 81, 99, 129, 181, 243, 297, 387, 473, 543, 891, 1161, 1419, 1629, 1991, 2673, 3483, 4257, 4887, 5973, 7783, 10449, 12771, 14661, 17919, 23349, 38313, 43983, 53757, 70047, 85613, 114939, 161271, 210141, 256839, 483813, 630423, 770517, 1891269, 2311551, 6934653, 20803959]

約数ペア:

[(1, 20803959), (3, 6934653), (9, 2311551), (11, 1891269), (27, 770517), (33, 630423), (43, 483813), (81, 256839), (99, 210141), (129, 161271), (181, 114939), (243, 85613), (297, 70047), (387, 53757), (473, 43983), (543, 38313), (891, 23349), (1161, 17919), (1419, 14661), (1629, 12771), (1991, 10449), (2673, 7783), (3483, 5973), (4257, 4887)]