256222239

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{1051}}^1$

素因数の和:1140

約数の個数: 64

約数和(自身を含む): 452444160

約数和(自身を除く): 196221921

約数列:

[1, 3, 7, 13, 19, 21, 39, 47, 57, 91, 133, 141, 247, 273, 329, 399, 611, 741, 893, 987, 1051, 1729, 1833, 2679, 3153, 4277, 5187, 6251, 7357, 11609, 12831, 13663, 18753, 19969, 22071, 34827, 40989, 49397, 59907, 81263, 95641, 139783, 148191, 243789, 259597, 286923, 345779, 419349, 642161, 778791, 938543, 1037337, 1817179, 1926483, 2815629, 4495127, 5451537, 6569801, 12201059, 13485381, 19709403, 36603177, 85407413, 256222239]

約数ペア:

[(1, 256222239), (3, 85407413), (7, 36603177), (13, 19709403), (19, 13485381), (21, 12201059), (39, 6569801), (47, 5451537), (57, 4495127), (91, 2815629), (133, 1926483), (141, 1817179), (247, 1037337), (273, 938543), (329, 778791), (399, 642161), (611, 419349), (741, 345779), (893, 286923), (987, 259597), (1051, 243789), (1729, 148191), (1833, 139783), (2679, 95641), (3153, 81263), (4277, 59907), (5187, 49397), (6251, 40989), (7357, 34827), (11609, 22071), (12831, 19969), (13663, 18753)]