18778473

素因数分解:

$3^4\times 7^1\times {\mathrm{33119}}^1$

素因数の和:33138

約数の個数: 20

約数和(自身を含む): 32060160

約数和(自身を除く): 13281687

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 33119, 99357, 231833, 298071, 695499, 894213, 2086497, 2682639, 6259491, 18778473]

約数ペア:

[(1, 18778473), (3, 6259491), (7, 2682639), (9, 2086497), (21, 894213), (27, 695499), (63, 298071), (81, 231833), (189, 99357), (567, 33119)]