20814320

素因数分解:

$2^4\times 5^1\times {\mathrm{260179}}^1$

素因数の和:260192

約数の個数: 20

約数和(自身を含む): 48393480

約数和(自身を除く): 27579160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 260179, 520358, 1040716, 1300895, 2081432, 2601790, 4162864, 5203580, 10407160, 20814320]

約数ペア:

[(1, 20814320), (2, 10407160), (4, 5203580), (5, 4162864), (8, 2601790), (10, 2081432), (16, 1300895), (20, 1040716), (40, 520358), (80, 260179)]