18984553

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{349}}^1\times {\mathrm{409}}^1$

素因数の和:784

約数の個数: 16

約数和(自身を含む): 22960000

約数和(自身を除く): 3975447

約数列:

[1, 7, 19, 133, 349, 409, 2443, 2863, 6631, 7771, 46417, 54397, 142741, 999187, 2712079, 18984553]

約数ペア:

[(1, 18984553), (7, 2712079), (19, 999187), (133, 142741), (349, 54397), (409, 46417), (2443, 7771), (2863, 6631)]