20165320

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{72019}}^1$

素因数の和:72037

約数の個数: 32

約数和(自身を含む): 51854400

約数和(自身を除く): 31689080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 72019, 144038, 288076, 360095, 504133, 576152, 720190, 1008266, 1440380, 2016532, 2520665, 2880760, 4033064, 5041330, 10082660, 20165320]

約数ペア:

[(1, 20165320), (2, 10082660), (4, 5041330), (5, 4033064), (7, 2880760), (8, 2520665), (10, 2016532), (14, 1440380), (20, 1008266), (28, 720190), (35, 576152), (40, 504133), (56, 360095), (70, 288076), (140, 144038), (280, 72019)]