28978240

素因数分解:

$2^6\times 5^1\times {\mathrm{137}}^1\times {\mathrm{661}}^1$

素因数の和:815

約数の個数: 56

約数和(自身を含む): 69613272

約数和(自身を除く): 40635032

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 137, 160, 274, 320, 548, 661, 685, 1096, 1322, 1370, 2192, 2644, 2740, 3305, 4384, 5288, 5480, 6610, 8768, 10576, 10960, 13220, 21152, 21920, 26440, 42304, 43840, 52880, 90557, 105760, 181114, 211520, 362228, 452785, 724456, 905570, 1448912, 1811140, 2897824, 3622280, 5795648, 7244560, 14489120, 28978240]

約数ペア:

[(1, 28978240), (2, 14489120), (4, 7244560), (5, 5795648), (8, 3622280), (10, 2897824), (16, 1811140), (20, 1448912), (32, 905570), (40, 724456), (64, 452785), (80, 362228), (137, 211520), (160, 181114), (274, 105760), (320, 90557), (548, 52880), (661, 43840), (685, 42304), (1096, 26440), (1322, 21920), (1370, 21152), (2192, 13220), (2644, 10960), (2740, 10576), (3305, 8768), (4384, 6610), (5288, 5480)]