21513315

素因数分解:

$3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{34981}}^1$

素因数の和:35030

約数の個数: 16

約数和(自身を含む): 35261856

約数和(自身を除く): 13748541

約数列:

[1, 3, 5, 15, 41, 123, 205, 615, 34981, 104943, 174905, 524715, 1434221, 4302663, 7171105, 21513315]

約数ペア:

[(1, 21513315), (3, 7171105), (5, 4302663), (15, 1434221), (41, 524715), (123, 174905), (205, 104943), (615, 34981)]