257580323

素因数分解:

$7^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{157}}^1$

素因数の和:348

約数の個数: 48

約数和(自身を含む): 353035200

約数和(自身を除く): 95454877

約数列:

[1, 7, 11, 13, 77, 91, 121, 143, 149, 157, 847, 1001, 1043, 1099, 1573, 1639, 1727, 1937, 2041, 11011, 11473, 12089, 13559, 14287, 18029, 18997, 21307, 22451, 23393, 126203, 132979, 149149, 157157, 163751, 234377, 246961, 257323, 304109, 1640639, 1728727, 1801261, 2128763, 2830553, 3345199, 19813871, 23416393, 36797189, 257580323]

約数ペア:

[(1, 257580323), (7, 36797189), (11, 23416393), (13, 19813871), (77, 3345199), (91, 2830553), (121, 2128763), (143, 1801261), (149, 1728727), (157, 1640639), (847, 304109), (1001, 257323), (1043, 246961), (1099, 234377), (1573, 163751), (1639, 157157), (1727, 149149), (1937, 132979), (2041, 126203), (11011, 23393), (11473, 22451), (12089, 21307), (13559, 18997), (14287, 18029)]