21492555

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{1913}}^1$

素因数の和:2035

約数の個数: 32

約数和(自身を含む): 39688704

約数和(自身を除く): 18196149

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 107, 321, 535, 749, 1605, 1913, 2247, 3745, 5739, 9565, 11235, 13391, 28695, 40173, 66955, 200865, 204691, 614073, 1023455, 1432837, 3070365, 4298511, 7164185, 21492555]

約数ペア:

[(1, 21492555), (3, 7164185), (5, 4298511), (7, 3070365), (15, 1432837), (21, 1023455), (35, 614073), (105, 204691), (107, 200865), (321, 66955), (535, 40173), (749, 28695), (1605, 13391), (1913, 11235), (2247, 9565), (3745, 5739)]