21033837

素因数分解:

$3^6\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1$

素因数の和:133

約数の個数: 56

約数和(自身を含む): 35780448

約数和(自身を除く): 14746611

約数列:

[1, 3, 9, 11, 27, 33, 43, 61, 81, 99, 129, 183, 243, 297, 387, 473, 549, 671, 729, 891, 1161, 1419, 1647, 2013, 2623, 2673, 3483, 4257, 4941, 6039, 7869, 8019, 10449, 12771, 14823, 18117, 23607, 28853, 31347, 38313, 44469, 54351, 70821, 86559, 114939, 163053, 212463, 259677, 344817, 489159, 637389, 779031, 1912167, 2337093, 7011279, 21033837]

約数ペア:

[(1, 21033837), (3, 7011279), (9, 2337093), (11, 1912167), (27, 779031), (33, 637389), (43, 489159), (61, 344817), (81, 259677), (99, 212463), (129, 163053), (183, 114939), (243, 86559), (297, 70821), (387, 54351), (473, 44469), (549, 38313), (671, 31347), (729, 28853), (891, 23607), (1161, 18117), (1419, 14823), (1647, 12771), (2013, 10449), (2623, 8019), (2673, 7869), (3483, 6039), (4257, 4941)]