27978165

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{761}}^1$

素因数の和:834

約数の個数: 48

約数和(自身を含む): 52303680

約数和(自身を除く): 24325515

約数列:

[1, 3, 5, 9, 15, 19, 43, 45, 57, 95, 129, 171, 215, 285, 387, 645, 761, 817, 855, 1935, 2283, 2451, 3805, 4085, 6849, 7353, 11415, 12255, 14459, 32723, 34245, 36765, 43377, 72295, 98169, 130131, 163615, 216885, 294507, 490845, 621737, 650655, 1472535, 1865211, 3108685, 5595633, 9326055, 27978165]

約数ペア:

[(1, 27978165), (3, 9326055), (5, 5595633), (9, 3108685), (15, 1865211), (19, 1472535), (43, 650655), (45, 621737), (57, 490845), (95, 294507), (129, 216885), (171, 163615), (215, 130131), (285, 98169), (387, 72295), (645, 43377), (761, 36765), (817, 34245), (855, 32723), (1935, 14459), (2283, 12255), (2451, 11415), (3805, 7353), (4085, 6849)]