51120315

素因数分解:

$3^4\times 5^1\times {\mathrm{126223}}^1$

素因数の和:126240

約数の個数: 20

約数和(自身を含む): 91638624

約数和(自身を除く): 40518309

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 126223, 378669, 631115, 1136007, 1893345, 3408021, 5680035, 10224063, 17040105, 51120315]

約数ペア:

[(1, 51120315), (3, 17040105), (5, 10224063), (9, 5680035), (15, 3408021), (27, 1893345), (45, 1136007), (81, 631115), (135, 378669), (405, 126223)]