208051200021

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{547}}^1\times {\mathrm{907}}^1\times {\mathrm{1051}}^1$

素因数の和:2534

約数の個数: 64

約数和(自身を含む): 335013355520

約数和(自身を除く): 126962155499

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 547, 907, 1051, 1641, 2721, 3153, 3829, 6349, 7357, 10393, 11487, 17233, 19047, 19969, 22071, 31179, 51699, 59907, 72751, 120631, 139783, 218253, 361893, 419349, 496129, 574897, 953257, 1488387, 1724691, 2859771, 3472903, 4024279, 6672799, 9426451, 10418709, 10923043, 12072837, 18111883, 20018397, 28279353, 32769129, 54335649, 65985157, 76461301, 126783181, 197955471, 229383903, 380349543, 521431579, 1564294737, 3650021053, 9907200001, 10950063159, 29721600003, 69350400007, 208051200021]

約数ペア:

[(1, 208051200021), (3, 69350400007), (7, 29721600003), (19, 10950063159), (21, 9907200001), (57, 3650021053), (133, 1564294737), (399, 521431579), (547, 380349543), (907, 229383903), (1051, 197955471), (1641, 126783181), (2721, 76461301), (3153, 65985157), (3829, 54335649), (6349, 32769129), (7357, 28279353), (10393, 20018397), (11487, 18111883), (17233, 12072837), (19047, 10923043), (19969, 10418709), (22071, 9426451), (31179, 6672799), (51699, 4024279), (59907, 3472903), (72751, 2859771), (120631, 1724691), (139783, 1488387), (218253, 953257), (361893, 574897), (419349, 496129)]