261605080

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{457}}^1\times {\mathrm{1301}}^1$

素因数の和:1780

約数の個数: 64

約数和(自身を含む): 644021280

約数和(自身を除く): 382416200

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 457, 914, 1301, 1828, 2285, 2602, 3656, 4570, 5027, 5204, 6505, 9140, 10054, 10408, 13010, 14311, 18280, 20108, 25135, 26020, 28622, 40216, 50270, 52040, 57244, 71555, 100540, 114488, 143110, 201080, 286220, 572440, 594557, 1189114, 2378228, 2972785, 4756456, 5945570, 6540127, 11891140, 13080254, 23782280, 26160508, 32700635, 52321016, 65401270, 130802540, 261605080]

約数ペア:

[(1, 261605080), (2, 130802540), (4, 65401270), (5, 52321016), (8, 32700635), (10, 26160508), (11, 23782280), (20, 13080254), (22, 11891140), (40, 6540127), (44, 5945570), (55, 4756456), (88, 2972785), (110, 2378228), (220, 1189114), (440, 594557), (457, 572440), (914, 286220), (1301, 201080), (1828, 143110), (2285, 114488), (2602, 100540), (3656, 71555), (4570, 57244), (5027, 52040), (5204, 50270), (6505, 40216), (9140, 28622), (10054, 26020), (10408, 25135), (13010, 20108), (14311, 18280)]