19958528

素因数分解:

$2^8\times {\mathrm{53}}^1\times {\mathrm{1471}}^1$

素因数の和:1540

約数の個数: 36

約数和(自身を含む): 40618368

約数和(自身を除く): 20659840

約数列:

[1, 2, 4, 8, 16, 32, 53, 64, 106, 128, 212, 256, 424, 848, 1471, 1696, 2942, 3392, 5884, 6784, 11768, 13568, 23536, 47072, 77963, 94144, 155926, 188288, 311852, 376576, 623704, 1247408, 2494816, 4989632, 9979264, 19958528]

約数ペア:

[(1, 19958528), (2, 9979264), (4, 4989632), (8, 2494816), (16, 1247408), (32, 623704), (53, 376576), (64, 311852), (106, 188288), (128, 155926), (212, 94144), (256, 77963), (424, 47072), (848, 23536), (1471, 13568), (1696, 11768), (2942, 6784), (3392, 5884)]