19889745

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{77999}}^1$

素因数の和:78024

約数の個数: 16

約数和(自身を含む): 33696000

約数和(自身を除く): 13806255

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 77999, 233997, 389995, 1169985, 1325983, 3977949, 6629915, 19889745]

約数ペア:

[(1, 19889745), (3, 6629915), (5, 3977949), (15, 1325983), (17, 1169985), (51, 389995), (85, 233997), (255, 77999)]