2020305920

素因数分解:

$2^{10}\times 5^1\times {\mathrm{197}}^1\times {\mathrm{2003}}^1$

素因数の和:2225

約数の個数: 88

約数和(自身を含む): 4873399344

約数和(自身を除く): 2853093424

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 197, 256, 320, 394, 512, 640, 788, 985, 1024, 1280, 1576, 1970, 2003, 2560, 3152, 3940, 4006, 5120, 6304, 7880, 8012, 10015, 12608, 15760, 16024, 20030, 25216, 31520, 32048, 40060, 50432, 63040, 64096, 80120, 100864, 126080, 128192, 160240, 201728, 252160, 256384, 320480, 394591, 504320, 512768, 640960, 789182, 1008640, 1025536, 1281920, 1578364, 1972955, 2051072, 2563840, 3156728, 3945910, 5127680, 6313456, 7891820, 10255360, 12626912, 15783640, 25253824, 31567280, 50507648, 63134560, 101015296, 126269120, 202030592, 252538240, 404061184, 505076480, 1010152960, 2020305920]

約数ペア:

[(1, 2020305920), (2, 1010152960), (4, 505076480), (5, 404061184), (8, 252538240), (10, 202030592), (16, 126269120), (20, 101015296), (32, 63134560), (40, 50507648), (64, 31567280), (80, 25253824), (128, 15783640), (160, 12626912), (197, 10255360), (256, 7891820), (320, 6313456), (394, 5127680), (512, 3945910), (640, 3156728), (788, 2563840), (985, 2051072), (1024, 1972955), (1280, 1578364), (1576, 1281920), (1970, 1025536), (2003, 1008640), (2560, 789182), (3152, 640960), (3940, 512768), (4006, 504320), (5120, 394591), (6304, 320480), (7880, 256384), (8012, 252160), (10015, 201728), (12608, 160240), (15760, 128192), (16024, 126080), (20030, 100864), (25216, 80120), (31520, 64096), (32048, 63040), (40060, 50432)]