261691080

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{311537}}^1$

素因数の和:311558

約数の個数: 64

約数和(自身を含む): 897229440

約数和(自身を除く): 635538360

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 311537, 623074, 934611, 1246148, 1557685, 1869222, 2180759, 2492296, 3115370, 3738444, 4361518, 4673055, 6230740, 6542277, 7476888, 8723036, 9346110, 10903795, 12461480, 13084554, 17446072, 18692220, 21807590, 26169108, 32711385, 37384440, 43615180, 52338216, 65422770, 87230360, 130845540, 261691080]

約数ペア:

[(1, 261691080), (2, 130845540), (3, 87230360), (4, 65422770), (5, 52338216), (6, 43615180), (7, 37384440), (8, 32711385), (10, 26169108), (12, 21807590), (14, 18692220), (15, 17446072), (20, 13084554), (21, 12461480), (24, 10903795), (28, 9346110), (30, 8723036), (35, 7476888), (40, 6542277), (42, 6230740), (56, 4673055), (60, 4361518), (70, 3738444), (84, 3115370), (105, 2492296), (120, 2180759), (140, 1869222), (168, 1557685), (210, 1246148), (280, 934611), (420, 623074), (840, 311537)]