21100828

素因数分解:

$2^2\times 7^1\times {\mathrm{107}}^1\times {\mathrm{7043}}^1$

素因数の和:7161

約数の個数: 24

約数和(自身を含む): 42602112

約数和(自身を除く): 21501284

約数列:

[1, 2, 4, 7, 14, 28, 107, 214, 428, 749, 1498, 2996, 7043, 14086, 28172, 49301, 98602, 197204, 753601, 1507202, 3014404, 5275207, 10550414, 21100828]

約数ペア:

[(1, 21100828), (2, 10550414), (4, 5275207), (7, 3014404), (14, 1507202), (28, 753601), (107, 197204), (214, 98602), (428, 49301), (749, 28172), (1498, 14086), (2996, 7043)]