20138961040

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{479}}^1\times {\mathrm{47777}}^1$

素因数の和:48280

約数の個数: 80

約数和(自身を含む): 51187438080

約数和(自身を除く): 31048477040

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 479, 880, 958, 1916, 2395, 3832, 4790, 5269, 7664, 9580, 10538, 19160, 21076, 26345, 38320, 42152, 47777, 52690, 84304, 95554, 105380, 191108, 210760, 238885, 382216, 421520, 477770, 525547, 764432, 955540, 1051094, 1911080, 2102188, 2627735, 3822160, 4204376, 5255470, 8408752, 10510940, 21021880, 22885183, 42043760, 45770366, 91540732, 114425915, 183081464, 228851830, 251737013, 366162928, 457703660, 503474026, 915407320, 1006948052, 1258685065, 1830814640, 2013896104, 2517370130, 4027792208, 5034740260, 10069480520, 20138961040]

約数ペア:

[(1, 20138961040), (2, 10069480520), (4, 5034740260), (5, 4027792208), (8, 2517370130), (10, 2013896104), (11, 1830814640), (16, 1258685065), (20, 1006948052), (22, 915407320), (40, 503474026), (44, 457703660), (55, 366162928), (80, 251737013), (88, 228851830), (110, 183081464), (176, 114425915), (220, 91540732), (440, 45770366), (479, 42043760), (880, 22885183), (958, 21021880), (1916, 10510940), (2395, 8408752), (3832, 5255470), (4790, 4204376), (5269, 3822160), (7664, 2627735), (9580, 2102188), (10538, 1911080), (19160, 1051094), (21076, 955540), (26345, 764432), (38320, 525547), (42152, 477770), (47777, 421520), (52690, 382216), (84304, 238885), (95554, 210760), (105380, 191108)]