20565874568

素因数分解:

$2^3\times {\mathrm{1039}}^1\times {\mathrm{2474239}}^1$

素因数の和:2475284

約数の個数: 16

約数和(自身を含む): 38598144000

約数和(自身を除く): 18032269432

約数列:

[1, 2, 4, 8, 1039, 2078, 4156, 8312, 2474239, 4948478, 9896956, 19793912, 2570734321, 5141468642, 10282937284, 20565874568]

約数ペア:

[(1, 20565874568), (2, 10282937284), (4, 5141468642), (8, 2570734321), (1039, 19793912), (2078, 9896956), (4156, 4948478), (8312, 2474239)]