20518695

素因数分解:

$3^2\times 5^1\times {\mathrm{211}}^1\times {\mathrm{2161}}^1$

素因数の和:2383

約数の個数: 24

約数和(自身を含む): 35750832

約数和(自身を除く): 15232137

約数列:

[1, 3, 5, 9, 15, 45, 211, 633, 1055, 1899, 2161, 3165, 6483, 9495, 10805, 19449, 32415, 97245, 455971, 1367913, 2279855, 4103739, 6839565, 20518695]

約数ペア:

[(1, 20518695), (3, 6839565), (5, 4103739), (9, 2279855), (15, 1367913), (45, 455971), (211, 97245), (633, 32415), (1055, 19449), (1899, 10805), (2161, 9495), (3165, 6483)]