1800000027

素因数分解:

$3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{223}}^1\times {\mathrm{4133}}^1$

素因数の和:4400

約数の個数: 48

約数和(自身を含む): 3081781248

約数和(自身を除く): 1281781221

約数列:

[1, 3, 7, 9, 21, 31, 63, 93, 217, 223, 279, 651, 669, 1561, 1953, 2007, 4133, 4683, 6913, 12399, 14049, 20739, 28931, 37197, 48391, 62217, 86793, 128123, 145173, 260379, 384369, 435519, 896861, 921659, 1153107, 2690583, 2764977, 6451613, 8071749, 8294931, 19354839, 28571429, 58064517, 85714287, 200000003, 257142861, 600000009, 1800000027]

約数ペア:

[(1, 1800000027), (3, 600000009), (7, 257142861), (9, 200000003), (21, 85714287), (31, 58064517), (63, 28571429), (93, 19354839), (217, 8294931), (223, 8071749), (279, 6451613), (651, 2764977), (669, 2690583), (1561, 1153107), (1953, 921659), (2007, 896861), (4133, 435519), (4683, 384369), (6913, 260379), (12399, 145173), (14049, 128123), (20739, 86793), (28931, 62217), (37197, 48391)]