21566158055

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{293}}^1\times {\mathrm{389}}^1$

素因数の和:812

約数の個数: 64

約数和(自身を含む): 29125474560

約数和(自身を除く): 7559316505

約数列:

[1, 5, 13, 41, 65, 71, 205, 293, 355, 389, 533, 923, 1465, 1945, 2665, 2911, 3809, 4615, 5057, 12013, 14555, 15949, 19045, 20803, 25285, 27619, 37843, 60065, 79745, 104015, 113977, 138095, 156169, 189215, 207337, 270439, 359047, 569885, 780845, 852923, 1036685, 1132379, 1352195, 1481701, 1795235, 4264615, 4673057, 5661895, 7408505, 8092367, 11087999, 14720927, 23365285, 40461835, 55439995, 60749741, 73604635, 105200771, 303748705, 331787047, 526003855, 1658935235, 4313231611, 21566158055]

約数ペア:

[(1, 21566158055), (5, 4313231611), (13, 1658935235), (41, 526003855), (65, 331787047), (71, 303748705), (205, 105200771), (293, 73604635), (355, 60749741), (389, 55439995), (533, 40461835), (923, 23365285), (1465, 14720927), (1945, 11087999), (2665, 8092367), (2911, 7408505), (3809, 5661895), (4615, 4673057), (5057, 4264615), (12013, 1795235), (14555, 1481701), (15949, 1352195), (19045, 1132379), (20803, 1036685), (25285, 852923), (27619, 780845), (37843, 569885), (60065, 359047), (79745, 270439), (104015, 207337), (113977, 189215), (138095, 156169)]