21609321

素因数分解:

$3^1\times {\mathrm{29}}^1\times {\mathrm{149}}^1\times {\mathrm{1667}}^1$

素因数の和:1848

約数の個数: 16

約数和(自身を含む): 30024000

約数和(自身を除く): 8414679

約数列:

[1, 3, 29, 87, 149, 447, 1667, 4321, 5001, 12963, 48343, 145029, 248383, 745149, 7203107, 21609321]

約数ペア:

[(1, 21609321), (3, 7203107), (29, 745149), (87, 248383), (149, 145029), (447, 48343), (1667, 12963), (4321, 5001)]