20961072

素因数分解:

$2^4\times 3^3\times {\mathrm{11}}^2\times {\mathrm{401}}^1$

素因数の和:440

約数の個数: 120

約数和(自身を含む): 66297840

約数和(自身を除く): 45336768

約数列:

[1, 2, 3, 4, 6, 8, 9, 11, 12, 16, 18, 22, 24, 27, 33, 36, 44, 48, 54, 66, 72, 88, 99, 108, 121, 132, 144, 176, 198, 216, 242, 264, 297, 363, 396, 401, 432, 484, 528, 594, 726, 792, 802, 968, 1089, 1188, 1203, 1452, 1584, 1604, 1936, 2178, 2376, 2406, 2904, 3208, 3267, 3609, 4356, 4411, 4752, 4812, 5808, 6416, 6534, 7218, 8712, 8822, 9624, 10827, 13068, 13233, 14436, 17424, 17644, 19248, 21654, 26136, 26466, 28872, 35288, 39699, 43308, 48521, 52272, 52932, 57744, 70576, 79398, 86616, 97042, 105864, 119097, 145563, 158796, 173232, 194084, 211728, 238194, 291126, 317592, 388168, 436689, 476388, 582252, 635184, 776336, 873378, 952776, 1164504, 1310067, 1746756, 1905552, 2329008, 2620134, 3493512, 5240268, 6987024, 10480536, 20961072]

約数ペア:

[(1, 20961072), (2, 10480536), (3, 6987024), (4, 5240268), (6, 3493512), (8, 2620134), (9, 2329008), (11, 1905552), (12, 1746756), (16, 1310067), (18, 1164504), (22, 952776), (24, 873378), (27, 776336), (33, 635184), (36, 582252), (44, 476388), (48, 436689), (54, 388168), (66, 317592), (72, 291126), (88, 238194), (99, 211728), (108, 194084), (121, 173232), (132, 158796), (144, 145563), (176, 119097), (198, 105864), (216, 97042), (242, 86616), (264, 79398), (297, 70576), (363, 57744), (396, 52932), (401, 52272), (432, 48521), (484, 43308), (528, 39699), (594, 35288), (726, 28872), (792, 26466), (802, 26136), (968, 21654), (1089, 19248), (1188, 17644), (1203, 17424), (1452, 14436), (1584, 13233), (1604, 13068), (1936, 10827), (2178, 9624), (2376, 8822), (2406, 8712), (2904, 7218), (3208, 6534), (3267, 6416), (3609, 5808), (4356, 4812), (4411, 4752)]