11920780

素因数分解:

$2^2\times 5^1\times {\mathrm{509}}^1\times {\mathrm{1171}}^1$

素因数の和:1689

約数の個数: 24

約数和(自身を含む): 25104240

約数和(自身を除く): 13183460

約数列:

[1, 2, 4, 5, 10, 20, 509, 1018, 1171, 2036, 2342, 2545, 4684, 5090, 5855, 10180, 11710, 23420, 596039, 1192078, 2384156, 2980195, 5960390, 11920780]

約数ペア:

[(1, 11920780), (2, 5960390), (4, 2980195), (5, 2384156), (10, 1192078), (20, 596039), (509, 23420), (1018, 11710), (1171, 10180), (2036, 5855), (2342, 5090), (2545, 4684)]