20400915

素因数分解:

$3^1\times 5^1\times {\mathrm{751}}^1\times {\mathrm{1811}}^1$

素因数の和:2570

約数の個数: 16

約数和(自身を含む): 32702976

約数和(自身を除く): 12302061

約数列:

[1, 3, 5, 15, 751, 1811, 2253, 3755, 5433, 9055, 11265, 27165, 1360061, 4080183, 6800305, 20400915]

約数ペア:

[(1, 20400915), (3, 6800305), (5, 4080183), (15, 1360061), (751, 27165), (1811, 11265), (2253, 9055), (3755, 5433)]