18180813

素因数分解:

$3^1\times 7^2\times {\mathrm{337}}^1\times {\mathrm{367}}^1$

素因数の和:721

約数の個数: 24

約数和(自身を含む): 28359552

約数和(自身を除く): 10178739

約数列:

[1, 3, 7, 21, 49, 147, 337, 367, 1011, 1101, 2359, 2569, 7077, 7707, 16513, 17983, 49539, 53949, 123679, 371037, 865753, 2597259, 6060271, 18180813]

約数ペア:

[(1, 18180813), (3, 6060271), (7, 2597259), (21, 865753), (49, 371037), (147, 123679), (337, 53949), (367, 49539), (1011, 17983), (1101, 16513), (2359, 7707), (2569, 7077)]