21677806720

素因数分解:

$2^7\times 5^1\times {\mathrm{43}}^1\times {\mathrm{787711}}^1$

素因数の和:787773

約数の個数: 64

約数和(自身を含む): 53028771840

約数和(自身を除く): 31350965120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 43, 64, 80, 86, 128, 160, 172, 215, 320, 344, 430, 640, 688, 860, 1376, 1720, 2752, 3440, 5504, 6880, 13760, 27520, 787711, 1575422, 3150844, 3938555, 6301688, 7877110, 12603376, 15754220, 25206752, 31508440, 33871573, 50413504, 63016880, 67743146, 100827008, 126033760, 135486292, 169357865, 252067520, 270972584, 338715730, 504135040, 541945168, 677431460, 1083890336, 1354862920, 2167780672, 2709725840, 4335561344, 5419451680, 10838903360, 21677806720]

約数ペア:

[(1, 21677806720), (2, 10838903360), (4, 5419451680), (5, 4335561344), (8, 2709725840), (10, 2167780672), (16, 1354862920), (20, 1083890336), (32, 677431460), (40, 541945168), (43, 504135040), (64, 338715730), (80, 270972584), (86, 252067520), (128, 169357865), (160, 135486292), (172, 126033760), (215, 100827008), (320, 67743146), (344, 63016880), (430, 50413504), (640, 33871573), (688, 31508440), (860, 25206752), (1376, 15754220), (1720, 12603376), (2752, 7877110), (3440, 6301688), (5504, 3938555), (6880, 3150844), (13760, 1575422), (27520, 787711)]