19783456

素因数分解:

$2^5\times 7^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1$

素因数の和:103

約数の個数: 144

約数和(自身を含む): 52399872

約数和(自身を除く): 32616416

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 31, 32, 37, 44, 49, 56, 62, 74, 77, 88, 98, 112, 124, 148, 154, 176, 196, 217, 224, 248, 259, 296, 308, 341, 352, 392, 407, 434, 496, 518, 539, 592, 616, 682, 784, 814, 868, 992, 1036, 1078, 1147, 1184, 1232, 1364, 1519, 1568, 1628, 1736, 1813, 2072, 2156, 2294, 2387, 2464, 2728, 2849, 3038, 3256, 3472, 3626, 4144, 4312, 4588, 4774, 5456, 5698, 6076, 6512, 6944, 7252, 8029, 8288, 8624, 9176, 9548, 10912, 11396, 12152, 12617, 13024, 14504, 16058, 16709, 17248, 18352, 19096, 19943, 22792, 24304, 25234, 29008, 32116, 33418, 36704, 38192, 39886, 45584, 48608, 50468, 56203, 58016, 64232, 66836, 76384, 79772, 88319, 91168, 100936, 112406, 128464, 133672, 159544, 176638, 201872, 224812, 256928, 267344, 319088, 353276, 403744, 449624, 534688, 618233, 638176, 706552, 899248, 1236466, 1413104, 1798496, 2472932, 2826208, 4945864, 9891728, 19783456]

約数ペア:

[(1, 19783456), (2, 9891728), (4, 4945864), (7, 2826208), (8, 2472932), (11, 1798496), (14, 1413104), (16, 1236466), (22, 899248), (28, 706552), (31, 638176), (32, 618233), (37, 534688), (44, 449624), (49, 403744), (56, 353276), (62, 319088), (74, 267344), (77, 256928), (88, 224812), (98, 201872), (112, 176638), (124, 159544), (148, 133672), (154, 128464), (176, 112406), (196, 100936), (217, 91168), (224, 88319), (248, 79772), (259, 76384), (296, 66836), (308, 64232), (341, 58016), (352, 56203), (392, 50468), (407, 48608), (434, 45584), (496, 39886), (518, 38192), (539, 36704), (592, 33418), (616, 32116), (682, 29008), (784, 25234), (814, 24304), (868, 22792), (992, 19943), (1036, 19096), (1078, 18352), (1147, 17248), (1184, 16709), (1232, 16058), (1364, 14504), (1519, 13024), (1568, 12617), (1628, 12152), (1736, 11396), (1813, 10912), (2072, 9548), (2156, 9176), (2294, 8624), (2387, 8288), (2464, 8029), (2728, 7252), (2849, 6944), (3038, 6512), (3256, 6076), (3472, 5698), (3626, 5456), (4144, 4774), (4312, 4588)]