20809921

素因数分解:

${\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{5857}}^1$

素因数の和:5904

約数の個数: 16

約数和(自身を含む): 25306560

約数和(自身を除く): 4496639

約数列:

[1, 11, 17, 19, 187, 209, 323, 3553, 5857, 64427, 99569, 111283, 1095259, 1224113, 1891811, 20809921]

約数ペア:

[(1, 20809921), (11, 1891811), (17, 1224113), (19, 1095259), (187, 111283), (209, 99569), (323, 64427), (3553, 5857)]