18920765

素因数分解:

$5^1\times {\mathrm{109}}^1\times {\mathrm{149}}^1\times {\mathrm{233}}^1$

素因数の和:496

約数の個数: 16

約数和(自身を含む): 23166000

約数和(自身を除く): 4245235

約数列:

[1, 5, 109, 149, 233, 545, 745, 1165, 16241, 25397, 34717, 81205, 126985, 173585, 3784153, 18920765]

約数ペア:

[(1, 18920765), (5, 3784153), (109, 173585), (149, 126985), (233, 81205), (545, 34717), (745, 25397), (1165, 16241)]