256943973

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{1087}}^1$

素因数の和:1162

約数の個数: 64

約数和(自身を含む): 438681600

約数和(自身を除く): 181737627

約数列:

[1, 3, 11, 13, 19, 29, 33, 39, 57, 87, 143, 209, 247, 319, 377, 429, 551, 627, 741, 957, 1087, 1131, 1653, 2717, 3261, 4147, 6061, 7163, 8151, 11957, 12441, 14131, 18183, 20653, 21489, 31523, 35871, 42393, 61959, 78793, 94569, 155441, 227183, 236379, 268489, 346753, 409799, 466323, 598937, 681549, 805467, 1040259, 1229397, 1796811, 2953379, 4507789, 6588307, 7786181, 8860137, 13523367, 19764921, 23358543, 85647991, 256943973]

約数ペア:

[(1, 256943973), (3, 85647991), (11, 23358543), (13, 19764921), (19, 13523367), (29, 8860137), (33, 7786181), (39, 6588307), (57, 4507789), (87, 2953379), (143, 1796811), (209, 1229397), (247, 1040259), (319, 805467), (377, 681549), (429, 598937), (551, 466323), (627, 409799), (741, 346753), (957, 268489), (1087, 236379), (1131, 227183), (1653, 155441), (2717, 94569), (3261, 78793), (4147, 61959), (6061, 42393), (7163, 35871), (8151, 31523), (11957, 21489), (12441, 20653), (14131, 18183)]