640481344

素因数分解:

$2^6\times {\mathrm{59}}^1\times {\mathrm{71}}^1\times {\mathrm{2389}}^1$

素因数の和:2531

約数の個数: 56

約数和(自身を含む): 1311249600

約数和(自身を除く): 670768256

約数列:

[1, 2, 4, 8, 16, 32, 59, 64, 71, 118, 142, 236, 284, 472, 568, 944, 1136, 1888, 2272, 2389, 3776, 4189, 4544, 4778, 8378, 9556, 16756, 19112, 33512, 38224, 67024, 76448, 134048, 140951, 152896, 169619, 268096, 281902, 339238, 563804, 678476, 1127608, 1356952, 2255216, 2713904, 4510432, 5427808, 9020864, 10007521, 10855616, 20015042, 40030084, 80060168, 160120336, 320240672, 640481344]

約数ペア:

[(1, 640481344), (2, 320240672), (4, 160120336), (8, 80060168), (16, 40030084), (32, 20015042), (59, 10855616), (64, 10007521), (71, 9020864), (118, 5427808), (142, 4510432), (236, 2713904), (284, 2255216), (472, 1356952), (568, 1127608), (944, 678476), (1136, 563804), (1888, 339238), (2272, 281902), (2389, 268096), (3776, 169619), (4189, 152896), (4544, 140951), (4778, 134048), (8378, 76448), (9556, 67024), (16756, 38224), (19112, 33512)]