28786851

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{137}}^1\times {\mathrm{631}}^1$

素因数の和:811

約数の個数: 24

約数和(自身を含む): 43084704

約数和(自身を除く): 14297853

約数列:

[1, 3, 9, 37, 111, 137, 333, 411, 631, 1233, 1893, 5069, 5679, 15207, 23347, 45621, 70041, 86447, 210123, 259341, 778023, 3198539, 9595617, 28786851]

約数ペア:

[(1, 28786851), (3, 9595617), (9, 3198539), (37, 778023), (111, 259341), (137, 210123), (333, 86447), (411, 70041), (631, 45621), (1233, 23347), (1893, 15207), (5069, 5679)]