28688654320

素因数分解:

$2^4\times 5^1\times {\mathrm{358608179}}^1$

素因数の和:358608192

約数の個数: 20

約数和(自身を含む): 66701121480

約数和(自身を除く): 38012467160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 358608179, 717216358, 1434432716, 1793040895, 2868865432, 3586081790, 5737730864, 7172163580, 14344327160, 28688654320]

約数ペア:

[(1, 28688654320), (2, 14344327160), (4, 7172163580), (5, 5737730864), (8, 3586081790), (10, 2868865432), (16, 1793040895), (20, 1434432716), (40, 717216358), (80, 358608179)]