256681089

素因数分解:

$3^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{71479}}^1$

素因数の和:71514

約数の個数: 32

約数和(自身を含む): 457472000

約数和(自身を除く): 200790911

約数列:

[1, 3, 7, 9, 19, 21, 27, 57, 63, 133, 171, 189, 399, 513, 1197, 3591, 71479, 214437, 500353, 643311, 1358101, 1501059, 1929933, 4074303, 4503177, 9506707, 12222909, 13509531, 28520121, 36668727, 85560363, 256681089]

約数ペア:

[(1, 256681089), (3, 85560363), (7, 36668727), (9, 28520121), (19, 13509531), (21, 12222909), (27, 9506707), (57, 4503177), (63, 4074303), (133, 1929933), (171, 1501059), (189, 1358101), (399, 643311), (513, 500353), (1197, 214437), (3591, 71479)]