20144289

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{7727}}^1$

素因数の和:7820

約数の個数: 16

約数和(自身を含む): 29675520

約数和(自身を除く): 9531231

約数列:

[1, 3, 11, 33, 79, 237, 869, 2607, 7727, 23181, 84997, 254991, 610433, 1831299, 6714763, 20144289]

約数ペア:

[(1, 20144289), (3, 6714763), (11, 1831299), (33, 610433), (79, 254991), (237, 84997), (869, 23181), (2607, 7727)]