280155855

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{19}}^3\times {\mathrm{389}}^1$

素因数の和:461

約数の個数: 64

約数和(自身を含む): 542131200

約数和(自身を除く): 261975345

約数列:

[1, 3, 5, 7, 15, 19, 21, 35, 57, 95, 105, 133, 285, 361, 389, 399, 665, 1083, 1167, 1805, 1945, 1995, 2527, 2723, 5415, 5835, 6859, 7391, 7581, 8169, 12635, 13615, 20577, 22173, 34295, 36955, 37905, 40845, 48013, 51737, 102885, 110865, 140429, 144039, 155211, 240065, 258685, 421287, 702145, 720195, 776055, 983003, 2106435, 2668151, 2949009, 4915015, 8004453, 13340755, 14745045, 18677057, 40022265, 56031171, 93385285, 280155855]

約数ペア:

[(1, 280155855), (3, 93385285), (5, 56031171), (7, 40022265), (15, 18677057), (19, 14745045), (21, 13340755), (35, 8004453), (57, 4915015), (95, 2949009), (105, 2668151), (133, 2106435), (285, 983003), (361, 776055), (389, 720195), (399, 702145), (665, 421287), (1083, 258685), (1167, 240065), (1805, 155211), (1945, 144039), (1995, 140429), (2527, 110865), (2723, 102885), (5415, 51737), (5835, 48013), (6859, 40845), (7391, 37905), (7581, 36955), (8169, 34295), (12635, 22173), (13615, 20577)]