21305185

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{131}}^1\times {\mathrm{2957}}^1$

素因数の和:3104

約数の個数: 16

約数和(自身を含む): 28112832

約数和(自身を除く): 6807647

約数列:

[1, 5, 11, 55, 131, 655, 1441, 2957, 7205, 14785, 32527, 162635, 387367, 1936835, 4261037, 21305185]

約数ペア:

[(1, 21305185), (5, 4261037), (11, 1936835), (55, 387367), (131, 162635), (655, 32527), (1441, 14785), (2957, 7205)]