21167280295

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{643}}^1\times {\mathrm{907}}^1$

素因数の和:1640

約数の個数: 64

約数和(自身を含む): 31323995136

約数和(自身を除く): 10156714841

約数列:

[1, 5, 7, 17, 35, 61, 85, 119, 305, 427, 595, 643, 907, 1037, 2135, 3215, 4501, 4535, 5185, 6349, 7259, 10931, 15419, 22505, 31745, 36295, 39223, 54655, 55327, 76517, 77095, 107933, 196115, 274561, 276635, 382585, 387289, 539665, 583201, 666791, 940559, 1372805, 1936445, 2916005, 3333955, 4082407, 4667537, 4702795, 6583913, 9914417, 20412035, 23337685, 32919565, 35575261, 49572085, 69400919, 177876305, 249026827, 347004595, 604779437, 1245134135, 3023897185, 4233456059, 21167280295]

約数ペア:

[(1, 21167280295), (5, 4233456059), (7, 3023897185), (17, 1245134135), (35, 604779437), (61, 347004595), (85, 249026827), (119, 177876305), (305, 69400919), (427, 49572085), (595, 35575261), (643, 32919565), (907, 23337685), (1037, 20412035), (2135, 9914417), (3215, 6583913), (4501, 4702795), (4535, 4667537), (5185, 4082407), (6349, 3333955), (7259, 2916005), (10931, 1936445), (15419, 1372805), (22505, 940559), (31745, 666791), (36295, 583201), (39223, 539665), (54655, 387289), (55327, 382585), (76517, 276635), (77095, 274561), (107933, 196115)]