28237881

素因数分解:

$3^1\times 7^1\times {\mathrm{631}}^1\times {\mathrm{2131}}^1$

素因数の和:2772

約数の個数: 16

約数和(自身を含む): 43117568

約数和(自身を除く): 14879687

約数列:

[1, 3, 7, 21, 631, 1893, 2131, 4417, 6393, 13251, 14917, 44751, 1344661, 4033983, 9412627, 28237881]

約数ペア:

[(1, 28237881), (3, 9412627), (7, 4033983), (21, 1344661), (631, 44751), (1893, 14917), (2131, 13251), (4417, 6393)]