20705427855

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{517571}}^1$

素因数の和:517716

約数の個数: 48

約数和(自身を含む): 41339510784

約数和(自身を除く): 20634082929

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 127, 315, 381, 635, 889, 1143, 1905, 2667, 4445, 5715, 8001, 13335, 40005, 517571, 1552713, 2587855, 3622997, 4658139, 7763565, 10868991, 18114985, 23290695, 32606973, 54344955, 65731517, 163034865, 197194551, 328657585, 460120619, 591583653, 985972755, 1380361857, 2300603095, 2957918265, 4141085571, 6901809285, 20705427855]

約数ペア:

[(1, 20705427855), (3, 6901809285), (5, 4141085571), (7, 2957918265), (9, 2300603095), (15, 1380361857), (21, 985972755), (35, 591583653), (45, 460120619), (63, 328657585), (105, 197194551), (127, 163034865), (315, 65731517), (381, 54344955), (635, 32606973), (889, 23290695), (1143, 18114985), (1905, 10868991), (2667, 7763565), (4445, 4658139), (5715, 3622997), (8001, 2587855), (13335, 1552713), (40005, 517571)]