21749728

素因数分解:

$2^5\times 7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1$

素因数の和:145

約数の個数: 144

約数和(自身を含む): 59122224

約数和(自身を除く): 37372496

約数列:

[1, 2, 4, 7, 8, 11, 13, 14, 16, 22, 26, 28, 32, 44, 49, 52, 56, 77, 88, 91, 97, 98, 104, 112, 143, 154, 176, 182, 194, 196, 208, 224, 286, 308, 352, 364, 388, 392, 416, 539, 572, 616, 637, 679, 728, 776, 784, 1001, 1067, 1078, 1144, 1232, 1261, 1274, 1358, 1456, 1552, 1568, 2002, 2134, 2156, 2288, 2464, 2522, 2548, 2716, 2912, 3104, 4004, 4268, 4312, 4576, 4753, 5044, 5096, 5432, 7007, 7469, 8008, 8536, 8624, 8827, 9506, 10088, 10192, 10864, 13871, 14014, 14938, 16016, 17072, 17248, 17654, 19012, 20176, 20384, 21728, 27742, 28028, 29876, 32032, 34144, 35308, 38024, 40352, 52283, 55484, 56056, 59752, 61789, 70616, 76048, 97097, 104566, 110968, 112112, 119504, 123578, 141232, 152096, 194194, 209132, 221936, 224224, 239008, 247156, 282464, 388388, 418264, 443872, 494312, 679679, 776776, 836528, 988624, 1359358, 1553552, 1673056, 1977248, 2718716, 3107104, 5437432, 10874864, 21749728]

約数ペア:

[(1, 21749728), (2, 10874864), (4, 5437432), (7, 3107104), (8, 2718716), (11, 1977248), (13, 1673056), (14, 1553552), (16, 1359358), (22, 988624), (26, 836528), (28, 776776), (32, 679679), (44, 494312), (49, 443872), (52, 418264), (56, 388388), (77, 282464), (88, 247156), (91, 239008), (97, 224224), (98, 221936), (104, 209132), (112, 194194), (143, 152096), (154, 141232), (176, 123578), (182, 119504), (194, 112112), (196, 110968), (208, 104566), (224, 97097), (286, 76048), (308, 70616), (352, 61789), (364, 59752), (388, 56056), (392, 55484), (416, 52283), (539, 40352), (572, 38024), (616, 35308), (637, 34144), (679, 32032), (728, 29876), (776, 28028), (784, 27742), (1001, 21728), (1067, 20384), (1078, 20176), (1144, 19012), (1232, 17654), (1261, 17248), (1274, 17072), (1358, 16016), (1456, 14938), (1552, 14014), (1568, 13871), (2002, 10864), (2134, 10192), (2156, 10088), (2288, 9506), (2464, 8827), (2522, 8624), (2548, 8536), (2716, 8008), (2912, 7469), (3104, 7007), (4004, 5432), (4268, 5096), (4312, 5044), (4576, 4753)]