20984821

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{257}}^1\times {\mathrm{571}}^1$

素因数の和:852

約数の個数: 16

約数和(自身を含む): 24792768

約数和(自身を除く): 3807947

約数列:

[1, 11, 13, 143, 257, 571, 2827, 3341, 6281, 7423, 36751, 81653, 146747, 1614217, 1907711, 20984821]

約数ペア:

[(1, 20984821), (11, 1907711), (13, 1614217), (143, 146747), (257, 81653), (571, 36751), (2827, 7423), (3341, 6281)]