21512029

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{107}}^1\times {\mathrm{373}}^1$

素因数の和:505

約数の個数: 24

約数和(自身を含む): 27628128

約数和(自身を除く): 6116099

約数列:

[1, 7, 11, 49, 77, 107, 373, 539, 749, 1177, 2611, 4103, 5243, 8239, 18277, 28721, 39911, 57673, 201047, 279377, 439021, 1955639, 3073147, 21512029]

約数ペア:

[(1, 21512029), (7, 3073147), (11, 1955639), (49, 439021), (77, 279377), (107, 201047), (373, 57673), (539, 39911), (749, 28721), (1177, 18277), (2611, 8239), (4103, 5243)]