18945507

素因数分解:

$3^1\times 7^2\times {\mathrm{359}}^2$

素因数の和:735

約数の個数: 18

約数和(自身を含む): 29466948

約数和(自身を除く): 10521441

約数列:

[1, 3, 7, 21, 49, 147, 359, 1077, 2513, 7539, 17591, 52773, 128881, 386643, 902167, 2706501, 6315169, 18945507]

約数ペア:

[(1, 18945507), (3, 6315169), (7, 2706501), (21, 902167), (49, 386643), (147, 128881), (359, 52773), (1077, 17591), (2513, 7539)]