28778805

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{1237}}^1$

素因数の和:1306

約数の個数: 48

約数和(自身を含む): 55620864

約数和(自身を除く): 26842059

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 47, 55, 99, 141, 165, 235, 423, 495, 517, 705, 1237, 1551, 2115, 2585, 3711, 4653, 6185, 7755, 11133, 13607, 18555, 23265, 40821, 55665, 58139, 68035, 122463, 174417, 204105, 290695, 523251, 612315, 639529, 872085, 1918587, 2616255, 3197645, 5755761, 9592935, 28778805]

約数ペア:

[(1, 28778805), (3, 9592935), (5, 5755761), (9, 3197645), (11, 2616255), (15, 1918587), (33, 872085), (45, 639529), (47, 612315), (55, 523251), (99, 290695), (141, 204105), (165, 174417), (235, 122463), (423, 68035), (495, 58139), (517, 55665), (705, 40821), (1237, 23265), (1551, 18555), (2115, 13607), (2585, 11133), (3711, 7755), (4653, 6185)]