21037185

素因数分解:

$3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{11987}}^1$

素因数の和:12014

約数の個数: 32

約数和(自身を含む): 40279680

約数和(自身を除く): 19242495

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 45, 65, 117, 135, 195, 351, 585, 1755, 11987, 35961, 59935, 107883, 155831, 179805, 323649, 467493, 539415, 779155, 1402479, 1618245, 2337465, 4207437, 7012395, 21037185]

約数ペア:

[(1, 21037185), (3, 7012395), (5, 4207437), (9, 2337465), (13, 1618245), (15, 1402479), (27, 779155), (39, 539415), (45, 467493), (65, 323649), (117, 179805), (135, 155831), (195, 107883), (351, 59935), (585, 35961), (1755, 11987)]