20087440

素因数分解:

$2^4\times 5^1\times {\mathrm{193}}^1\times {\mathrm{1301}}^1$

素因数の和:1507

約数の個数: 40

約数和(自身を含む): 46981368

約数和(自身を除く): 26893928

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 193, 386, 772, 965, 1301, 1544, 1930, 2602, 3088, 3860, 5204, 6505, 7720, 10408, 13010, 15440, 20816, 26020, 52040, 104080, 251093, 502186, 1004372, 1255465, 2008744, 2510930, 4017488, 5021860, 10043720, 20087440]

約数ペア:

[(1, 20087440), (2, 10043720), (4, 5021860), (5, 4017488), (8, 2510930), (10, 2008744), (16, 1255465), (20, 1004372), (40, 502186), (80, 251093), (193, 104080), (386, 52040), (772, 26020), (965, 20816), (1301, 15440), (1544, 13010), (1930, 10408), (2602, 7720), (3088, 6505), (3860, 5204)]