21059804

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{337}}^1\times {\mathrm{919}}^1$

素因数の和:1277

約数の個数: 24

約数和(自身を含む): 39180960

約数和(自身を除く): 18121156

約数列:

[1, 2, 4, 17, 34, 68, 337, 674, 919, 1348, 1838, 3676, 5729, 11458, 15623, 22916, 31246, 62492, 309703, 619406, 1238812, 5264951, 10529902, 21059804]

約数ペア:

[(1, 21059804), (2, 10529902), (4, 5264951), (17, 1238812), (34, 619406), (68, 309703), (337, 62492), (674, 31246), (919, 22916), (1348, 15623), (1838, 11458), (3676, 5729)]