20112587720

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{199}}^1\times {\mathrm{61627}}^1$

素因数の和:61878

約数の個数: 64

約数和(自身を含む): 46590768000

約数和(自身を除く): 26478180280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 199, 205, 328, 398, 410, 796, 820, 995, 1592, 1640, 1990, 3980, 7960, 8159, 16318, 32636, 40795, 61627, 65272, 81590, 123254, 163180, 246508, 308135, 326360, 493016, 616270, 1232540, 2465080, 2526707, 5053414, 10106828, 12263773, 12633535, 20213656, 24527546, 25267070, 49055092, 50534140, 61318865, 98110184, 101068280, 122637730, 245275460, 490550920, 502814693, 1005629386, 2011258772, 2514073465, 4022517544, 5028146930, 10056293860, 20112587720]

約数ペア:

[(1, 20112587720), (2, 10056293860), (4, 5028146930), (5, 4022517544), (8, 2514073465), (10, 2011258772), (20, 1005629386), (40, 502814693), (41, 490550920), (82, 245275460), (164, 122637730), (199, 101068280), (205, 98110184), (328, 61318865), (398, 50534140), (410, 49055092), (796, 25267070), (820, 24527546), (995, 20213656), (1592, 12633535), (1640, 12263773), (1990, 10106828), (3980, 5053414), (7960, 2526707), (8159, 2465080), (16318, 1232540), (32636, 616270), (40795, 493016), (61627, 326360), (65272, 308135), (81590, 246508), (123254, 163180)]