80445440

素因数分解:

$2^{15}\times 5^1\times {\mathrm{491}}^1$

素因数の和:526

約数の個数: 64

約数和(自身を含む): 193459320

約数和(自身を除く): 113013880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 491, 512, 640, 982, 1024, 1280, 1964, 2048, 2455, 2560, 3928, 4096, 4910, 5120, 7856, 8192, 9820, 10240, 15712, 16384, 19640, 20480, 31424, 32768, 39280, 40960, 62848, 78560, 81920, 125696, 157120, 163840, 251392, 314240, 502784, 628480, 1005568, 1256960, 2011136, 2513920, 4022272, 5027840, 8044544, 10055680, 16089088, 20111360, 40222720, 80445440]

約数ペア:

[(1, 80445440), (2, 40222720), (4, 20111360), (5, 16089088), (8, 10055680), (10, 8044544), (16, 5027840), (20, 4022272), (32, 2513920), (40, 2011136), (64, 1256960), (80, 1005568), (128, 628480), (160, 502784), (256, 314240), (320, 251392), (491, 163840), (512, 157120), (640, 125696), (982, 81920), (1024, 78560), (1280, 62848), (1964, 40960), (2048, 39280), (2455, 32768), (2560, 31424), (3928, 20480), (4096, 19640), (4910, 16384), (5120, 15712), (7856, 10240), (8192, 9820)]