28812021

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{31907}}^1$

素因数の和:31960

約数の個数: 16

約数和(自身を含む): 44926464

約数和(自身を除く): 16114443

約数列:

[1, 3, 7, 21, 43, 129, 301, 903, 31907, 95721, 223349, 670047, 1372001, 4116003, 9604007, 28812021]

約数ペア:

[(1, 28812021), (3, 9604007), (7, 4116003), (21, 1372001), (43, 670047), (129, 223349), (301, 95721), (903, 31907)]