21771128

素因数分解:

$2^3\times {\mathrm{53}}^1\times {\mathrm{51347}}^1$

素因数の和:51406

約数の個数: 16

約数和(自身を含む): 41591880

約数和(自身を除く): 19820752

約数列:

[1, 2, 4, 8, 53, 106, 212, 424, 51347, 102694, 205388, 410776, 2721391, 5442782, 10885564, 21771128]

約数ペア:

[(1, 21771128), (2, 10885564), (4, 5442782), (8, 2721391), (53, 410776), (106, 205388), (212, 102694), (424, 51347)]