20831589

素因数分解:

$3^2\times {\mathrm{79}}^1\times {\mathrm{83}}^1\times {\mathrm{353}}^1$

素因数の和:521

約数の個数: 24

約数和(自身を含む): 30925440

約数和(自身を除く): 10093851

約数列:

[1, 3, 9, 79, 83, 237, 249, 353, 711, 747, 1059, 3177, 6557, 19671, 27887, 29299, 59013, 83661, 87897, 250983, 263691, 2314621, 6943863, 20831589]

約数ペア:

[(1, 20831589), (3, 6943863), (9, 2314621), (79, 263691), (83, 250983), (237, 87897), (249, 83661), (353, 59013), (711, 29299), (747, 27887), (1059, 19671), (3177, 6557)]