20217912

素因数分解:

$2^3\times 3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{137}}^1$

素因数の和:213

約数の個数: 128

約数和(自身を含む): 61205760

約数和(自身を除く): 40987848

約数列:

[1, 2, 3, 4, 6, 8, 11, 12, 13, 22, 24, 26, 33, 39, 43, 44, 52, 66, 78, 86, 88, 104, 129, 132, 137, 143, 156, 172, 258, 264, 274, 286, 312, 344, 411, 429, 473, 516, 548, 559, 572, 822, 858, 946, 1032, 1096, 1118, 1144, 1419, 1507, 1644, 1677, 1716, 1781, 1892, 2236, 2838, 3014, 3288, 3354, 3432, 3562, 3784, 4472, 4521, 5343, 5676, 5891, 6028, 6149, 6708, 7124, 9042, 10686, 11352, 11782, 12056, 12298, 13416, 14248, 17673, 18084, 18447, 19591, 21372, 23564, 24596, 35346, 36168, 36894, 39182, 42744, 47128, 49192, 58773, 64801, 70692, 73788, 76583, 78364, 117546, 129602, 141384, 147576, 153166, 156728, 194403, 229749, 235092, 259204, 306332, 388806, 459498, 470184, 518408, 612664, 777612, 842413, 918996, 1555224, 1684826, 1837992, 2527239, 3369652, 5054478, 6739304, 10108956, 20217912]

約数ペア:

[(1, 20217912), (2, 10108956), (3, 6739304), (4, 5054478), (6, 3369652), (8, 2527239), (11, 1837992), (12, 1684826), (13, 1555224), (22, 918996), (24, 842413), (26, 777612), (33, 612664), (39, 518408), (43, 470184), (44, 459498), (52, 388806), (66, 306332), (78, 259204), (86, 235092), (88, 229749), (104, 194403), (129, 156728), (132, 153166), (137, 147576), (143, 141384), (156, 129602), (172, 117546), (258, 78364), (264, 76583), (274, 73788), (286, 70692), (312, 64801), (344, 58773), (411, 49192), (429, 47128), (473, 42744), (516, 39182), (548, 36894), (559, 36168), (572, 35346), (822, 24596), (858, 23564), (946, 21372), (1032, 19591), (1096, 18447), (1118, 18084), (1144, 17673), (1419, 14248), (1507, 13416), (1644, 12298), (1677, 12056), (1716, 11782), (1781, 11352), (1892, 10686), (2236, 9042), (2838, 7124), (3014, 6708), (3288, 6149), (3354, 6028), (3432, 5891), (3562, 5676), (3784, 5343), (4472, 4521)]