21449968

素因数分解:

$2^4\times {\mathrm{157}}^1\times {\mathrm{8539}}^1$

素因数の和:8704

約数の個数: 20

約数和(自身を含む): 41828920

約数和(自身を除く): 20378952

約数列:

[1, 2, 4, 8, 16, 157, 314, 628, 1256, 2512, 8539, 17078, 34156, 68312, 136624, 1340623, 2681246, 5362492, 10724984, 21449968]

約数ペア:

[(1, 21449968), (2, 10724984), (4, 5362492), (8, 2681246), (16, 1340623), (157, 136624), (314, 68312), (628, 34156), (1256, 17078), (2512, 8539)]