20047720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{283}}^1$

素因数の和:335

約数の個数: 128

約数和(自身を含む): 58890240

約数和(自身を除く): 38842520

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 23, 28, 35, 40, 44, 46, 55, 56, 70, 77, 88, 92, 110, 115, 140, 154, 161, 184, 220, 230, 253, 280, 283, 308, 322, 385, 440, 460, 506, 566, 616, 644, 770, 805, 920, 1012, 1132, 1265, 1288, 1415, 1540, 1610, 1771, 1981, 2024, 2264, 2530, 2830, 3080, 3113, 3220, 3542, 3962, 5060, 5660, 6226, 6440, 6509, 7084, 7924, 8855, 9905, 10120, 11320, 12452, 13018, 14168, 15565, 15848, 17710, 19810, 21791, 24904, 26036, 31130, 32545, 35420, 39620, 43582, 45563, 52072, 62260, 65090, 70840, 71599, 79240, 87164, 91126, 108955, 124520, 130180, 143198, 174328, 182252, 217910, 227815, 260360, 286396, 357995, 364504, 435820, 455630, 501193, 572792, 715990, 871640, 911260, 1002386, 1431980, 1822520, 2004772, 2505965, 2863960, 4009544, 5011930, 10023860, 20047720]

約数ペア:

[(1, 20047720), (2, 10023860), (4, 5011930), (5, 4009544), (7, 2863960), (8, 2505965), (10, 2004772), (11, 1822520), (14, 1431980), (20, 1002386), (22, 911260), (23, 871640), (28, 715990), (35, 572792), (40, 501193), (44, 455630), (46, 435820), (55, 364504), (56, 357995), (70, 286396), (77, 260360), (88, 227815), (92, 217910), (110, 182252), (115, 174328), (140, 143198), (154, 130180), (161, 124520), (184, 108955), (220, 91126), (230, 87164), (253, 79240), (280, 71599), (283, 70840), (308, 65090), (322, 62260), (385, 52072), (440, 45563), (460, 43582), (506, 39620), (566, 35420), (616, 32545), (644, 31130), (770, 26036), (805, 24904), (920, 21791), (1012, 19810), (1132, 17710), (1265, 15848), (1288, 15565), (1415, 14168), (1540, 13018), (1610, 12452), (1771, 11320), (1981, 10120), (2024, 9905), (2264, 8855), (2530, 7924), (2830, 7084), (3080, 6509), (3113, 6440), (3220, 6226), (3542, 5660), (3962, 5060)]