20561295

素因数分解:

$3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1\times {\mathrm{499}}^1$

素因数の和:615

約数の個数: 32

約数和(自身を含む): 34272000

約数和(自身を除く): 13710705

約数列:

[1, 3, 5, 15, 41, 67, 123, 201, 205, 335, 499, 615, 1005, 1497, 2495, 2747, 7485, 8241, 13735, 20459, 33433, 41205, 61377, 100299, 102295, 167165, 306885, 501495, 1370753, 4112259, 6853765, 20561295]

約数ペア:

[(1, 20561295), (3, 6853765), (5, 4112259), (15, 1370753), (41, 501495), (67, 306885), (123, 167165), (201, 102295), (205, 100299), (335, 61377), (499, 41205), (615, 33433), (1005, 20459), (1497, 13735), (2495, 8241), (2747, 7485)]