261661010

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{107}}^1\times {\mathrm{1447}}^1$

素因数の和:1587

約数の個数: 48

約数和(自身を含む): 515128896

約数和(自身を除く): 253467886

約数列:

[1, 2, 5, 10, 13, 26, 65, 107, 130, 169, 214, 338, 535, 845, 1070, 1391, 1447, 1690, 2782, 2894, 6955, 7235, 13910, 14470, 18083, 18811, 36166, 37622, 90415, 94055, 154829, 180830, 188110, 244543, 309658, 489086, 774145, 1222715, 1548290, 2012777, 2445430, 4025554, 10063885, 20127770, 26166101, 52332202, 130830505, 261661010]

約数ペア:

[(1, 261661010), (2, 130830505), (5, 52332202), (10, 26166101), (13, 20127770), (26, 10063885), (65, 4025554), (107, 2445430), (130, 2012777), (169, 1548290), (214, 1222715), (338, 774145), (535, 489086), (845, 309658), (1070, 244543), (1391, 188110), (1447, 180830), (1690, 154829), (2782, 94055), (2894, 90415), (6955, 37622), (7235, 36166), (13910, 18811), (14470, 18083)]