20987182

素因数分解:

$2^1\times {\mathrm{43}}^1\times {\mathrm{277}}^1\times {\mathrm{881}}^1$

素因数の和:1203

約数の個数: 16

約数和(自身を含む): 32365872

約数和(自身を除く): 11378690

約数列:

[1, 2, 43, 86, 277, 554, 881, 1762, 11911, 23822, 37883, 75766, 244037, 488074, 10493591, 20987182]

約数ペア:

[(1, 20987182), (2, 10493591), (43, 488074), (86, 244037), (277, 75766), (554, 37883), (881, 23822), (1762, 11911)]