21031605

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{179}}^1\times {\mathrm{373}}^1$

素因数の和:570

約数の個数: 48

約数和(自身を含む): 42007680

約数和(自身を除く): 20976075

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 179, 315, 373, 537, 895, 1119, 1253, 1611, 1865, 2611, 2685, 3357, 3759, 5595, 6265, 7833, 8055, 11277, 13055, 16785, 18795, 23499, 39165, 56385, 66767, 117495, 200301, 333835, 467369, 600903, 1001505, 1402107, 2336845, 3004515, 4206321, 7010535, 21031605]

約数ペア:

[(1, 21031605), (3, 7010535), (5, 4206321), (7, 3004515), (9, 2336845), (15, 1402107), (21, 1001505), (35, 600903), (45, 467369), (63, 333835), (105, 200301), (179, 117495), (315, 66767), (373, 56385), (537, 39165), (895, 23499), (1119, 18795), (1253, 16785), (1611, 13055), (1865, 11277), (2611, 8055), (2685, 7833), (3357, 6265), (3759, 5595)]