20515887

素因数分解:

$3^2\times 7^1\times {\mathrm{137}}^1\times {\mathrm{2377}}^1$

素因数の和:2527

約数の個数: 24

約数和(自身を含む): 34129056

約数和(自身を除く): 13613169

約数列:

[1, 3, 7, 9, 21, 63, 137, 411, 959, 1233, 2377, 2877, 7131, 8631, 16639, 21393, 49917, 149751, 325649, 976947, 2279543, 2930841, 6838629, 20515887]

約数ペア:

[(1, 20515887), (3, 6838629), (7, 2930841), (9, 2279543), (21, 976947), (63, 325649), (137, 149751), (411, 49917), (959, 21393), (1233, 16639), (2377, 8631), (2877, 7131)]