2641639

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{29}}^1$

素因数の和:80

約数の個数: 36

約数和(自身を含む): 3755160

約数和(自身を除く): 1113521

約数列:

[1, 7, 11, 13, 29, 49, 77, 91, 143, 169, 203, 319, 377, 539, 637, 1001, 1183, 1421, 1859, 2233, 2639, 4147, 4901, 7007, 8281, 13013, 15631, 18473, 29029, 34307, 53911, 91091, 203203, 240149, 377377, 2641639]

約数ペア:

[(1, 2641639), (7, 377377), (11, 240149), (13, 203203), (29, 91091), (49, 53911), (77, 34307), (91, 29029), (143, 18473), (169, 15631), (203, 13013), (319, 8281), (377, 7007), (539, 4901), (637, 4147), (1001, 2639), (1183, 2233), (1421, 1859)]