20516416

素因数分解:

$2^6\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{173}}^1$

素因数の和:311

約数の個数: 56

約数和(自身を含む): 43754040

約数和(自身を除く): 23237624

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 64, 68, 109, 136, 173, 218, 272, 346, 436, 544, 692, 872, 1088, 1384, 1744, 1853, 2768, 2941, 3488, 3706, 5536, 5882, 6976, 7412, 11072, 11764, 14824, 18857, 23528, 29648, 37714, 47056, 59296, 75428, 94112, 118592, 150856, 188224, 301712, 320569, 603424, 641138, 1206848, 1282276, 2564552, 5129104, 10258208, 20516416]

約数ペア:

[(1, 20516416), (2, 10258208), (4, 5129104), (8, 2564552), (16, 1282276), (17, 1206848), (32, 641138), (34, 603424), (64, 320569), (68, 301712), (109, 188224), (136, 150856), (173, 118592), (218, 94112), (272, 75428), (346, 59296), (436, 47056), (544, 37714), (692, 29648), (872, 23528), (1088, 18857), (1384, 14824), (1744, 11764), (1853, 11072), (2768, 7412), (2941, 6976), (3488, 5882), (3706, 5536)]