19781568

素因数分解:

$2^6\times 3^2\times {\mathrm{61}}^1\times {\mathrm{563}}^1$

素因数の和:642

約数の個数: 84

約数和(自身を含む): 57732168

約数和(自身を除く): 37950600

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 61, 64, 72, 96, 122, 144, 183, 192, 244, 288, 366, 488, 549, 563, 576, 732, 976, 1098, 1126, 1464, 1689, 1952, 2196, 2252, 2928, 3378, 3904, 4392, 4504, 5067, 5856, 6756, 8784, 9008, 10134, 11712, 13512, 17568, 18016, 20268, 27024, 34343, 35136, 36032, 40536, 54048, 68686, 81072, 103029, 108096, 137372, 162144, 206058, 274744, 309087, 324288, 412116, 549488, 618174, 824232, 1098976, 1236348, 1648464, 2197952, 2472696, 3296928, 4945392, 6593856, 9890784, 19781568]

約数ペア:

[(1, 19781568), (2, 9890784), (3, 6593856), (4, 4945392), (6, 3296928), (8, 2472696), (9, 2197952), (12, 1648464), (16, 1236348), (18, 1098976), (24, 824232), (32, 618174), (36, 549488), (48, 412116), (61, 324288), (64, 309087), (72, 274744), (96, 206058), (122, 162144), (144, 137372), (183, 108096), (192, 103029), (244, 81072), (288, 68686), (366, 54048), (488, 40536), (549, 36032), (563, 35136), (576, 34343), (732, 27024), (976, 20268), (1098, 18016), (1126, 17568), (1464, 13512), (1689, 11712), (1952, 10134), (2196, 9008), (2252, 8784), (2928, 6756), (3378, 5856), (3904, 5067), (4392, 4504)]