20481657

素因数分解:

$3^1\times 7^2\times {\mathrm{277}}^1\times {\mathrm{503}}^1$

素因数の和:797

約数の個数: 24

約数和(自身を含む): 31945536

約数和(自身を除く): 11463879

約数列:

[1, 3, 7, 21, 49, 147, 277, 503, 831, 1509, 1939, 3521, 5817, 10563, 13573, 24647, 40719, 73941, 139331, 417993, 975317, 2925951, 6827219, 20481657]

約数ペア:

[(1, 20481657), (3, 6827219), (7, 2925951), (21, 975317), (49, 417993), (147, 139331), (277, 73941), (503, 40719), (831, 24647), (1509, 13573), (1939, 10563), (3521, 5817)]