19728015

素因数分解:

$3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{27983}}^1$

素因数の和:28038

約数の個数: 16

約数和(自身を含む): 32237568

約数和(自身を除く): 12509553

約数列:

[1, 3, 5, 15, 47, 141, 235, 705, 27983, 83949, 139915, 419745, 1315201, 3945603, 6576005, 19728015]

約数ペア:

[(1, 19728015), (3, 6576005), (5, 3945603), (15, 1315201), (47, 419745), (141, 139915), (235, 83949), (705, 27983)]