27820245

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{1381}}^1$

素因数の和:1485

約数の個数: 32

約数和(自身を含む): 47761920

約数和(自身を除く): 19941675

約数列:

[1, 3, 5, 15, 17, 51, 79, 85, 237, 255, 395, 1185, 1343, 1381, 4029, 4143, 6715, 6905, 20145, 20715, 23477, 70431, 109099, 117385, 327297, 352155, 545495, 1636485, 1854683, 5564049, 9273415, 27820245]

約数ペア:

[(1, 27820245), (3, 9273415), (5, 5564049), (15, 1854683), (17, 1636485), (51, 545495), (79, 352155), (85, 327297), (237, 117385), (255, 109099), (395, 70431), (1185, 23477), (1343, 20715), (1381, 20145), (4029, 6905), (4143, 6715)]