19781376

素因数分解:

$2^8\times 3^1\times {\mathrm{43}}^1\times {\mathrm{599}}^1$

素因数の和:661

約数の個数: 72

約数和(自身を含む): 53961600

約数和(自身を除く): 34180224

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 43, 48, 64, 86, 96, 128, 129, 172, 192, 256, 258, 344, 384, 516, 599, 688, 768, 1032, 1198, 1376, 1797, 2064, 2396, 2752, 3594, 4128, 4792, 5504, 7188, 8256, 9584, 11008, 14376, 16512, 19168, 25757, 28752, 33024, 38336, 51514, 57504, 76672, 77271, 103028, 115008, 153344, 154542, 206056, 230016, 309084, 412112, 460032, 618168, 824224, 1236336, 1648448, 2472672, 3296896, 4945344, 6593792, 9890688, 19781376]

約数ペア:

[(1, 19781376), (2, 9890688), (3, 6593792), (4, 4945344), (6, 3296896), (8, 2472672), (12, 1648448), (16, 1236336), (24, 824224), (32, 618168), (43, 460032), (48, 412112), (64, 309084), (86, 230016), (96, 206056), (128, 154542), (129, 153344), (172, 115008), (192, 103028), (256, 77271), (258, 76672), (344, 57504), (384, 51514), (516, 38336), (599, 33024), (688, 28752), (768, 25757), (1032, 19168), (1198, 16512), (1376, 14376), (1797, 11008), (2064, 9584), (2396, 8256), (2752, 7188), (3594, 5504), (4128, 4792)]