213654321

素因数分解:

$3^3\times {\mathrm{41}}^1\times {\mathrm{193003}}^1$

素因数の和:193053

約数の個数: 16

約数和(自身を含む): 324246720

約数和(自身を除く): 110592399

約数列:

[1, 3, 9, 27, 41, 123, 369, 1107, 193003, 579009, 1737027, 5211081, 7913123, 23739369, 71218107, 213654321]

約数ペア:

[(1, 213654321), (3, 71218107), (9, 23739369), (27, 7913123), (41, 5211081), (123, 1737027), (369, 579009), (1107, 193003)]