13021821

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{271}}^1\times {\mathrm{281}}^1$

素因数の和:577

約数の個数: 24

約数和(自身を含む): 19943040

約数和(自身を除く): 6921219

約数列:

[1, 3, 9, 19, 57, 171, 271, 281, 813, 843, 2439, 2529, 5149, 5339, 15447, 16017, 46341, 48051, 76151, 228453, 685359, 1446869, 4340607, 13021821]

約数ペア:

[(1, 13021821), (3, 4340607), (9, 1446869), (19, 685359), (57, 228453), (171, 76151), (271, 48051), (281, 46341), (813, 16017), (843, 15447), (2439, 5339), (2529, 5149)]