19721445

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{77339}}^1$

素因数の和:77364

約数の個数: 16

約数和(自身を含む): 33410880

約数和(自身を除く): 13689435

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 77339, 232017, 386695, 1160085, 1314763, 3944289, 6573815, 19721445]

約数ペア:

[(1, 19721445), (3, 6573815), (5, 3944289), (15, 1314763), (17, 1160085), (51, 386695), (85, 232017), (255, 77339)]