21549906

素因数分解:

$2^1\times 3^2\times 7^2\times {\mathrm{53}}^1\times {\mathrm{461}}^1$

素因数の和:536

約数の個数: 72

約数和(自身を含む): 55459404

約数和(自身を除く): 33909498

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 49, 53, 63, 98, 106, 126, 147, 159, 294, 318, 371, 441, 461, 477, 742, 882, 922, 954, 1113, 1383, 2226, 2597, 2766, 3227, 3339, 4149, 5194, 6454, 6678, 7791, 8298, 9681, 15582, 19362, 22589, 23373, 24433, 29043, 45178, 46746, 48866, 58086, 67767, 73299, 135534, 146598, 171031, 203301, 219897, 342062, 406602, 439794, 513093, 1026186, 1197217, 1539279, 2394434, 3078558, 3591651, 7183302, 10774953, 21549906]

約数ペア:

[(1, 21549906), (2, 10774953), (3, 7183302), (6, 3591651), (7, 3078558), (9, 2394434), (14, 1539279), (18, 1197217), (21, 1026186), (42, 513093), (49, 439794), (53, 406602), (63, 342062), (98, 219897), (106, 203301), (126, 171031), (147, 146598), (159, 135534), (294, 73299), (318, 67767), (371, 58086), (441, 48866), (461, 46746), (477, 45178), (742, 29043), (882, 24433), (922, 23373), (954, 22589), (1113, 19362), (1383, 15582), (2226, 9681), (2597, 8298), (2766, 7791), (3227, 6678), (3339, 6454), (4149, 5194)]