28020015

素因数分解:

$3^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{15187}}^1$

素因数の和:15239

約数の個数: 24

約数和(自身を含む): 49755888

約数和(自身を除く): 21735873

約数列:

[1, 3, 5, 9, 15, 41, 45, 123, 205, 369, 615, 1845, 15187, 45561, 75935, 136683, 227805, 622667, 683415, 1868001, 3113335, 5604003, 9340005, 28020015]

約数ペア:

[(1, 28020015), (3, 9340005), (5, 5604003), (9, 3113335), (15, 1868001), (41, 683415), (45, 622667), (123, 227805), (205, 136683), (369, 75935), (615, 45561), (1845, 15187)]