21526155

素因数分解:

$3^5\times 5^1\times 7^1\times {\mathrm{2531}}^1$

素因数の和:2558

約数の個数: 48

約数和(自身を含む): 44239104

約数和(自身を除く): 22712949

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 81, 105, 135, 189, 243, 315, 405, 567, 945, 1215, 1701, 2531, 2835, 7593, 8505, 12655, 17717, 22779, 37965, 53151, 68337, 88585, 113895, 159453, 205011, 265755, 341685, 478359, 615033, 797265, 1025055, 1435077, 2391795, 3075165, 4305231, 7175385, 21526155]

約数ペア:

[(1, 21526155), (3, 7175385), (5, 4305231), (7, 3075165), (9, 2391795), (15, 1435077), (21, 1025055), (27, 797265), (35, 615033), (45, 478359), (63, 341685), (81, 265755), (105, 205011), (135, 159453), (189, 113895), (243, 88585), (315, 68337), (405, 53151), (567, 37965), (945, 22779), (1215, 17717), (1701, 12655), (2531, 8505), (2835, 7593)]