26620881

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{487}}^1$

素因数の和:653

約数の個数: 32

約数和(自身を含む): 43100160

約数和(自身を除く): 16479279

約数列:

[1, 3, 7, 19, 21, 57, 133, 137, 399, 411, 487, 959, 1461, 2603, 2877, 3409, 7809, 9253, 10227, 18221, 27759, 54663, 64771, 66719, 194313, 200157, 467033, 1267661, 1401099, 3802983, 8873627, 26620881]

約数ペア:

[(1, 26620881), (3, 8873627), (7, 3802983), (19, 1401099), (21, 1267661), (57, 467033), (133, 200157), (137, 194313), (399, 66719), (411, 64771), (487, 54663), (959, 27759), (1461, 18221), (2603, 10227), (2877, 9253), (3409, 7809)]