19902495

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{78049}}^1$

素因数の和:78074

約数の個数: 16

約数和(自身を含む): 33717600

約数和(自身を除く): 13815105

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 78049, 234147, 390245, 1170735, 1326833, 3980499, 6634165, 19902495]

約数ペア:

[(1, 19902495), (3, 6634165), (5, 3980499), (15, 1326833), (17, 1170735), (51, 390245), (85, 234147), (255, 78049)]