18913878627

素因数分解:

$3^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{181}}^1\times {\mathrm{997}}^1$

素因数の和:1249

約数の個数: 96

約数和(自身を含む): 31805190144

約数和(自身を除く): 12891311517

約数列:

[1, 3, 7, 21, 23, 31, 49, 69, 93, 147, 161, 181, 217, 483, 543, 651, 713, 997, 1127, 1267, 1519, 2139, 2991, 3381, 3801, 4163, 4557, 4991, 5611, 6979, 8869, 12489, 14973, 16833, 20937, 22931, 26607, 29141, 30907, 34937, 39277, 48853, 68793, 87423, 92721, 104811, 117831, 129053, 146559, 160517, 180457, 203987, 216349, 274939, 387159, 481551, 541371, 611961, 649047, 710861, 824817, 903371, 1123619, 1263199, 1514443, 2132583, 2710113, 3370857, 3789597, 4150511, 4543329, 4976027, 5594167, 6323597, 8842393, 12451533, 14928081, 16782501, 18970791, 26527179, 29053577, 34832189, 39159169, 87160731, 104496567, 117477507, 128665841, 203375039, 274114183, 385997523, 610125117, 822342549, 900660887, 2701982661, 6304626209, 18913878627]

約数ペア:

[(1, 18913878627), (3, 6304626209), (7, 2701982661), (21, 900660887), (23, 822342549), (31, 610125117), (49, 385997523), (69, 274114183), (93, 203375039), (147, 128665841), (161, 117477507), (181, 104496567), (217, 87160731), (483, 39159169), (543, 34832189), (651, 29053577), (713, 26527179), (997, 18970791), (1127, 16782501), (1267, 14928081), (1519, 12451533), (2139, 8842393), (2991, 6323597), (3381, 5594167), (3801, 4976027), (4163, 4543329), (4557, 4150511), (4991, 3789597), (5611, 3370857), (6979, 2710113), (8869, 2132583), (12489, 1514443), (14973, 1263199), (16833, 1123619), (20937, 903371), (22931, 824817), (26607, 710861), (29141, 649047), (30907, 611961), (34937, 541371), (39277, 481551), (48853, 387159), (68793, 274939), (87423, 216349), (92721, 203987), (104811, 180457), (117831, 160517), (129053, 146559)]