19556680

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{263}}^1$

素因数の和:311

約数の個数: 96

約数和(自身を含む): 52176960

約数和(自身を除く): 32620280

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 20, 22, 26, 40, 44, 52, 55, 65, 88, 104, 110, 130, 143, 169, 220, 260, 263, 286, 338, 440, 520, 526, 572, 676, 715, 845, 1052, 1144, 1315, 1352, 1430, 1690, 1859, 2104, 2630, 2860, 2893, 3380, 3419, 3718, 5260, 5720, 5786, 6760, 6838, 7436, 9295, 10520, 11572, 13676, 14465, 14872, 17095, 18590, 23144, 27352, 28930, 34190, 37180, 37609, 44447, 57860, 68380, 74360, 75218, 88894, 115720, 136760, 150436, 177788, 188045, 222235, 300872, 355576, 376090, 444470, 488917, 752180, 888940, 977834, 1504360, 1777880, 1955668, 2444585, 3911336, 4889170, 9778340, 19556680]

約数ペア:

[(1, 19556680), (2, 9778340), (4, 4889170), (5, 3911336), (8, 2444585), (10, 1955668), (11, 1777880), (13, 1504360), (20, 977834), (22, 888940), (26, 752180), (40, 488917), (44, 444470), (52, 376090), (55, 355576), (65, 300872), (88, 222235), (104, 188045), (110, 177788), (130, 150436), (143, 136760), (169, 115720), (220, 88894), (260, 75218), (263, 74360), (286, 68380), (338, 57860), (440, 44447), (520, 37609), (526, 37180), (572, 34190), (676, 28930), (715, 27352), (845, 23144), (1052, 18590), (1144, 17095), (1315, 14872), (1352, 14465), (1430, 13676), (1690, 11572), (1859, 10520), (2104, 9295), (2630, 7436), (2860, 6838), (2893, 6760), (3380, 5786), (3419, 5720), (3718, 5260)]