18688989

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{727}}^1$

素因数の和:801

約数の個数: 32

約数和(自身を含む): 29352960

約数和(自身を除く): 10663971

約数列:

[1, 3, 11, 19, 33, 41, 57, 123, 209, 451, 627, 727, 779, 1353, 2181, 2337, 7997, 8569, 13813, 23991, 25707, 29807, 41439, 89421, 151943, 327877, 455829, 566333, 983631, 1698999, 6229663, 18688989]

約数ペア:

[(1, 18688989), (3, 6229663), (11, 1698999), (19, 983631), (33, 566333), (41, 455829), (57, 327877), (123, 151943), (209, 89421), (451, 41439), (627, 29807), (727, 25707), (779, 23991), (1353, 13813), (2181, 8569), (2337, 7997)]