20145765

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{199}}^1\times {\mathrm{397}}^1$

素因数の和:621

約数の個数: 32

約数和(自身を含む): 34387200

約数和(自身を除く): 14241435

約数列:

[1, 3, 5, 15, 17, 51, 85, 199, 255, 397, 597, 995, 1191, 1985, 2985, 3383, 5955, 6749, 10149, 16915, 20247, 33745, 50745, 79003, 101235, 237009, 395015, 1185045, 1343051, 4029153, 6715255, 20145765]

約数ペア:

[(1, 20145765), (3, 6715255), (5, 4029153), (15, 1343051), (17, 1185045), (51, 395015), (85, 237009), (199, 101235), (255, 79003), (397, 50745), (597, 33745), (995, 20247), (1191, 16915), (1985, 10149), (2985, 6749), (3383, 5955)]