21167369648

素因数分解:

$2^4\times {\mathrm{389}}^1\times {\mathrm{3400927}}^1$

素因数の和:3401324

約数の個数: 20

約数和(自身を含む): 41117219520

約数和(自身を除く): 19949849872

約数列:

[1, 2, 4, 8, 16, 389, 778, 1556, 3112, 6224, 3400927, 6801854, 13603708, 27207416, 54414832, 1322960603, 2645921206, 5291842412, 10583684824, 21167369648]

約数ペア:

[(1, 21167369648), (2, 10583684824), (4, 5291842412), (8, 2645921206), (16, 1322960603), (389, 54414832), (778, 27207416), (1556, 13603708), (3112, 6801854), (6224, 3400927)]