21879255

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{239}}^1\times {\mathrm{359}}^1$

素因数の和:623

約数の個数: 32

約数和(自身を含む): 37324800

約数和(自身を除く): 15445545

約数列:

[1, 3, 5, 15, 17, 51, 85, 239, 255, 359, 717, 1077, 1195, 1795, 3585, 4063, 5385, 6103, 12189, 18309, 20315, 30515, 60945, 85801, 91545, 257403, 429005, 1287015, 1458617, 4375851, 7293085, 21879255]

約数ペア:

[(1, 21879255), (3, 7293085), (5, 4375851), (15, 1458617), (17, 1287015), (51, 429005), (85, 257403), (239, 91545), (255, 85801), (359, 60945), (717, 30515), (1077, 20315), (1195, 18309), (1795, 12189), (3585, 6103), (4063, 5385)]