213079405

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{211}}^1$

素因数の和:338

約数の個数: 64

約数和(自身を含む): 333121536

約数和(自身を除く): 120042131

約数列:

[1, 5, 7, 11, 35, 43, 55, 61, 77, 211, 215, 301, 305, 385, 427, 473, 671, 1055, 1477, 1505, 2135, 2321, 2365, 2623, 3311, 3355, 4697, 7385, 9073, 11605, 12871, 13115, 16247, 16555, 18361, 23485, 28853, 45365, 63511, 64355, 81235, 90097, 91805, 99803, 141581, 144265, 201971, 317555, 450485, 499015, 553453, 698621, 707905, 991067, 1009855, 2767265, 3493105, 3874171, 4955335, 6087983, 19370855, 30439915, 42615881, 213079405]

約数ペア:

[(1, 213079405), (5, 42615881), (7, 30439915), (11, 19370855), (35, 6087983), (43, 4955335), (55, 3874171), (61, 3493105), (77, 2767265), (211, 1009855), (215, 991067), (301, 707905), (305, 698621), (385, 553453), (427, 499015), (473, 450485), (671, 317555), (1055, 201971), (1477, 144265), (1505, 141581), (2135, 99803), (2321, 91805), (2365, 90097), (2623, 81235), (3311, 64355), (3355, 63511), (4697, 45365), (7385, 28853), (9073, 23485), (11605, 18361), (12871, 16555), (13115, 16247)]