18921765

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{74203}}^1$

素因数の和:74228

約数の個数: 16

約数和(自身を含む): 32056128

約数和(自身を除く): 13134363

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 74203, 222609, 371015, 1113045, 1261451, 3784353, 6307255, 18921765]

約数ペア:

[(1, 18921765), (3, 6307255), (5, 3784353), (15, 1261451), (17, 1113045), (51, 371015), (85, 222609), (255, 74203)]