21339640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{76213}}^1$

素因数の和:76231

約数の個数: 32

約数和(自身を含む): 54874080

約数和(自身を除く): 33534440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 76213, 152426, 304852, 381065, 533491, 609704, 762130, 1066982, 1524260, 2133964, 2667455, 3048520, 4267928, 5334910, 10669820, 21339640]

約数ペア:

[(1, 21339640), (2, 10669820), (4, 5334910), (5, 4267928), (7, 3048520), (8, 2667455), (10, 2133964), (14, 1524260), (20, 1066982), (28, 762130), (35, 609704), (40, 533491), (56, 381065), (70, 304852), (140, 152426), (280, 76213)]