1272609280

素因数分解:

$2^9\times 5^1\times {\mathrm{497113}}^1$

素因数の和:497136

約数の個数: 40

約数和(自身を含む): 3051285732

約数和(自身を除く): 1778676452

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1280, 2560, 497113, 994226, 1988452, 2485565, 3976904, 4971130, 7953808, 9942260, 15907616, 19884520, 31815232, 39769040, 63630464, 79538080, 127260928, 159076160, 254521856, 318152320, 636304640, 1272609280]

約数ペア:

[(1, 1272609280), (2, 636304640), (4, 318152320), (5, 254521856), (8, 159076160), (10, 127260928), (16, 79538080), (20, 63630464), (32, 39769040), (40, 31815232), (64, 19884520), (80, 15907616), (128, 9942260), (160, 7953808), (256, 4971130), (320, 3976904), (512, 2485565), (640, 1988452), (1280, 994226), (2560, 497113)]