638168320

素因数分解:

$2^8\times 5^1\times {\mathrm{79}}^1\times {\mathrm{6311}}^1$

素因数の和:6411

約数の個数: 72

約数和(自身を含む): 1548207360

約数和(自身を除く): 910039040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 79, 80, 128, 158, 160, 256, 316, 320, 395, 632, 640, 790, 1264, 1280, 1580, 2528, 3160, 5056, 6311, 6320, 10112, 12622, 12640, 20224, 25244, 25280, 31555, 50488, 50560, 63110, 100976, 101120, 126220, 201952, 252440, 403904, 498569, 504880, 807808, 997138, 1009760, 1615616, 1994276, 2019520, 2492845, 3988552, 4039040, 4985690, 7977104, 8078080, 9971380, 15954208, 19942760, 31908416, 39885520, 63816832, 79771040, 127633664, 159542080, 319084160, 638168320]

約数ペア:

[(1, 638168320), (2, 319084160), (4, 159542080), (5, 127633664), (8, 79771040), (10, 63816832), (16, 39885520), (20, 31908416), (32, 19942760), (40, 15954208), (64, 9971380), (79, 8078080), (80, 7977104), (128, 4985690), (158, 4039040), (160, 3988552), (256, 2492845), (316, 2019520), (320, 1994276), (395, 1615616), (632, 1009760), (640, 997138), (790, 807808), (1264, 504880), (1280, 498569), (1580, 403904), (2528, 252440), (3160, 201952), (5056, 126220), (6311, 101120), (6320, 100976), (10112, 63110), (12622, 50560), (12640, 50488), (20224, 31555), (25244, 25280)]