18865793804

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{1993}}^1$

素因数の和:2120

約数の個数: 144

約数和(自身を含む): 41686404480

約数和(自身を除く): 22820610676

約数列:

[1, 2, 4, 11, 13, 19, 22, 26, 38, 44, 52, 67, 76, 134, 143, 169, 209, 247, 268, 286, 338, 418, 494, 572, 676, 737, 836, 871, 988, 1273, 1474, 1742, 1859, 1993, 2546, 2717, 2948, 3211, 3484, 3718, 3986, 5092, 5434, 6422, 7436, 7972, 9581, 10868, 11323, 12844, 14003, 16549, 19162, 21923, 22646, 25909, 28006, 33098, 35321, 37867, 38324, 43846, 45292, 51818, 56012, 66196, 70642, 75734, 87692, 103636, 124553, 133531, 141284, 151468, 182039, 215137, 249106, 267062, 284999, 336817, 364078, 416537, 430274, 492271, 498212, 534124, 569998, 673634, 728156, 833074, 860548, 984542, 1139996, 1347268, 1468841, 1666148, 1735903, 1969084, 2366507, 2537089, 2937682, 3471806, 3704987, 4733014, 5074178, 5414981, 5875364, 6399523, 6943612, 7409974, 9466028, 10148356, 10829962, 12799046, 14819948, 19094933, 21659924, 22566739, 25598092, 27907979, 32982157, 38189866, 45133478, 55815958, 65964314, 70394753, 76379732, 90266956, 111631916, 131928628, 140789506, 248234129, 281579012, 362803727, 428768041, 496468258, 725607454, 857536082, 992936516, 1451214908, 1715072164, 4716448451, 9432896902, 18865793804]

約数ペア:

[(1, 18865793804), (2, 9432896902), (4, 4716448451), (11, 1715072164), (13, 1451214908), (19, 992936516), (22, 857536082), (26, 725607454), (38, 496468258), (44, 428768041), (52, 362803727), (67, 281579012), (76, 248234129), (134, 140789506), (143, 131928628), (169, 111631916), (209, 90266956), (247, 76379732), (268, 70394753), (286, 65964314), (338, 55815958), (418, 45133478), (494, 38189866), (572, 32982157), (676, 27907979), (737, 25598092), (836, 22566739), (871, 21659924), (988, 19094933), (1273, 14819948), (1474, 12799046), (1742, 10829962), (1859, 10148356), (1993, 9466028), (2546, 7409974), (2717, 6943612), (2948, 6399523), (3211, 5875364), (3484, 5414981), (3718, 5074178), (3986, 4733014), (5092, 3704987), (5434, 3471806), (6422, 2937682), (7436, 2537089), (7972, 2366507), (9581, 1969084), (10868, 1735903), (11323, 1666148), (12844, 1468841), (14003, 1347268), (16549, 1139996), (19162, 984542), (21923, 860548), (22646, 833074), (25909, 728156), (28006, 673634), (33098, 569998), (35321, 534124), (37867, 498212), (38324, 492271), (43846, 430274), (45292, 416537), (51818, 364078), (56012, 336817), (66196, 284999), (70642, 267062), (75734, 249106), (87692, 215137), (103636, 182039), (124553, 151468), (133531, 141284)]