400782080

素因数分解:

$2^8\times 5^1\times {\mathrm{353}}^1\times {\mathrm{887}}^1$

素因数の和:1261

約数の個数: 72

約数和(自身を含む): 963803232

約数和(自身を除く): 563021152

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 353, 640, 706, 887, 1280, 1412, 1765, 1774, 2824, 3530, 3548, 4435, 5648, 7060, 7096, 8870, 11296, 14120, 14192, 17740, 22592, 28240, 28384, 35480, 45184, 56480, 56768, 70960, 90368, 112960, 113536, 141920, 225920, 227072, 283840, 313111, 451840, 567680, 626222, 1135360, 1252444, 1565555, 2504888, 3131110, 5009776, 6262220, 10019552, 12524440, 20039104, 25048880, 40078208, 50097760, 80156416, 100195520, 200391040, 400782080]

約数ペア:

[(1, 400782080), (2, 200391040), (4, 100195520), (5, 80156416), (8, 50097760), (10, 40078208), (16, 25048880), (20, 20039104), (32, 12524440), (40, 10019552), (64, 6262220), (80, 5009776), (128, 3131110), (160, 2504888), (256, 1565555), (320, 1252444), (353, 1135360), (640, 626222), (706, 567680), (887, 451840), (1280, 313111), (1412, 283840), (1765, 227072), (1774, 225920), (2824, 141920), (3530, 113536), (3548, 112960), (4435, 90368), (5648, 70960), (7060, 56768), (7096, 56480), (8870, 45184), (11296, 35480), (14120, 28384), (14192, 28240), (17740, 22592)]