21055785

素因数分解:

$3^1\times 5^1\times {\mathrm{929}}^1\times {\mathrm{1511}}^1$

素因数の和:2448

約数の個数: 16

約数和(自身を含む): 33747840

約数和(自身を除く): 12692055

約数列:

[1, 3, 5, 15, 929, 1511, 2787, 4533, 4645, 7555, 13935, 22665, 1403719, 4211157, 7018595, 21055785]

約数ペア:

[(1, 21055785), (3, 7018595), (5, 4211157), (15, 1403719), (929, 22665), (1511, 13935), (2787, 7555), (4533, 4645)]