20781567382016

素因数分解:

$2^9\times 7^1\times {\mathrm{47}}^2\times {\mathrm{2624911}}^1$

素因数の和:2625030

約数の個数: 120

約数和(自身を含む): 48485505526656

約数和(自身を除く): 27703938144640

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 47, 56, 64, 94, 112, 128, 188, 224, 256, 329, 376, 448, 512, 658, 752, 896, 1316, 1504, 1792, 2209, 2632, 3008, 3584, 4418, 5264, 6016, 8836, 10528, 12032, 15463, 17672, 21056, 24064, 30926, 35344, 42112, 61852, 70688, 84224, 123704, 141376, 168448, 247408, 282752, 494816, 565504, 989632, 1131008, 1979264, 2624911, 3958528, 5249822, 7917056, 10499644, 18374377, 20999288, 36748754, 41998576, 73497508, 83997152, 123370817, 146995016, 167994304, 246741634, 293990032, 335988608, 493483268, 587980064, 671977216, 863595719, 986966536, 1175960128, 1343954432, 1727191438, 1973933072, 2351920256, 3454382876, 3947866144, 4703840512, 5798428399, 6908765752, 7895732288, 9407681024, 11596856798, 13817531504, 15791464576, 23193713596, 27635063008, 31582929152, 40588998793, 46387427192, 55270126016, 63165858304, 81177997586, 92774854384, 110540252032, 162355995172, 185549708768, 221080504064, 324711990344, 371099417536, 442161008128, 649423980688, 742198835072, 1298847961376, 1484397670144, 2597695922752, 2968795340288, 5195391845504, 10390783691008, 20781567382016]

約数ペア:

[(1, 20781567382016), (2, 10390783691008), (4, 5195391845504), (7, 2968795340288), (8, 2597695922752), (14, 1484397670144), (16, 1298847961376), (28, 742198835072), (32, 649423980688), (47, 442161008128), (56, 371099417536), (64, 324711990344), (94, 221080504064), (112, 185549708768), (128, 162355995172), (188, 110540252032), (224, 92774854384), (256, 81177997586), (329, 63165858304), (376, 55270126016), (448, 46387427192), (512, 40588998793), (658, 31582929152), (752, 27635063008), (896, 23193713596), (1316, 15791464576), (1504, 13817531504), (1792, 11596856798), (2209, 9407681024), (2632, 7895732288), (3008, 6908765752), (3584, 5798428399), (4418, 4703840512), (5264, 3947866144), (6016, 3454382876), (8836, 2351920256), (10528, 1973933072), (12032, 1727191438), (15463, 1343954432), (17672, 1175960128), (21056, 986966536), (24064, 863595719), (30926, 671977216), (35344, 587980064), (42112, 493483268), (61852, 335988608), (70688, 293990032), (84224, 246741634), (123704, 167994304), (141376, 146995016), (168448, 123370817), (247408, 83997152), (282752, 73497508), (494816, 41998576), (565504, 36748754), (989632, 20999288), (1131008, 18374377), (1979264, 10499644), (2624911, 7917056), (3958528, 5249822)]