20448081

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{173}}^1\times {\mathrm{571}}^1$

素因数の和:773

約数の個数: 24

約数和(自身を含む): 31052736

約数和(自身を除く): 10604655

約数列:

[1, 3, 9, 23, 69, 173, 207, 519, 571, 1557, 1713, 3979, 5139, 11937, 13133, 35811, 39399, 98783, 118197, 296349, 889047, 2272009, 6816027, 20448081]

約数ペア:

[(1, 20448081), (3, 6816027), (9, 2272009), (23, 889047), (69, 296349), (173, 118197), (207, 98783), (519, 39399), (571, 35811), (1557, 13133), (1713, 11937), (3979, 5139)]