21279188

素因数分解:

$2^2\times 7^1\times {\mathrm{89}}^1\times {\mathrm{8539}}^1$

素因数の和:8639

約数の個数: 24

約数和(自身を含む): 43041600

約数和(自身を除く): 21762412

約数列:

[1, 2, 4, 7, 14, 28, 89, 178, 356, 623, 1246, 2492, 8539, 17078, 34156, 59773, 119546, 239092, 759971, 1519942, 3039884, 5319797, 10639594, 21279188]

約数ペア:

[(1, 21279188), (2, 10639594), (4, 5319797), (7, 3039884), (14, 1519942), (28, 759971), (89, 239092), (178, 119546), (356, 59773), (623, 34156), (1246, 17078), (2492, 8539)]