20428605

素因数分解:

$3^4\times 5^1\times {\mathrm{50441}}^1$

素因数の和:50458

約数の個数: 20

約数和(自身を含む): 36620892

約数和(自身を除く): 16192287

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 50441, 151323, 252205, 453969, 756615, 1361907, 2269845, 4085721, 6809535, 20428605]

約数ペア:

[(1, 20428605), (3, 6809535), (5, 4085721), (9, 2269845), (15, 1361907), (27, 756615), (45, 453969), (81, 252205), (135, 151323), (405, 50441)]