21171009

素因数分解:

$3^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{2833}}^1$

素因数の和:2936

約数の個数: 16

約数和(自身を含む): 29382912

約数和(自身を除く): 8211903

約数列:

[1, 3, 47, 53, 141, 159, 2491, 2833, 7473, 8499, 133151, 150149, 399453, 450447, 7057003, 21171009]

約数ペア:

[(1, 21171009), (3, 7057003), (47, 450447), (53, 399453), (141, 150149), (159, 133151), (2491, 8499), (2833, 7473)]