388634240

素因数分解:

$2^7\times 5^1\times {\mathrm{281}}^1\times {\mathrm{2161}}^1$

素因数の和:2461

約数の個数: 64

約数和(自身を含む): 932816520

約数和(自身を除く): 544182280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 281, 320, 562, 640, 1124, 1405, 2161, 2248, 2810, 4322, 4496, 5620, 8644, 8992, 10805, 11240, 17288, 17984, 21610, 22480, 34576, 35968, 43220, 44960, 69152, 86440, 89920, 138304, 172880, 179840, 276608, 345760, 607241, 691520, 1214482, 1383040, 2428964, 3036205, 4857928, 6072410, 9715856, 12144820, 19431712, 24289640, 38863424, 48579280, 77726848, 97158560, 194317120, 388634240]

約数ペア:

[(1, 388634240), (2, 194317120), (4, 97158560), (5, 77726848), (8, 48579280), (10, 38863424), (16, 24289640), (20, 19431712), (32, 12144820), (40, 9715856), (64, 6072410), (80, 4857928), (128, 3036205), (160, 2428964), (281, 1383040), (320, 1214482), (562, 691520), (640, 607241), (1124, 345760), (1405, 276608), (2161, 179840), (2248, 172880), (2810, 138304), (4322, 89920), (4496, 86440), (5620, 69152), (8644, 44960), (8992, 43220), (10805, 35968), (11240, 34576), (17288, 22480), (17984, 21610)]