18660789

素因数分解:

$3^2\times 7^1\times {\mathrm{271}}^1\times {\mathrm{1093}}^1$

素因数の和:1377

約数の個数: 24

約数和(自身を含む): 30947072

約数和(自身を除く): 12286283

約数列:

[1, 3, 7, 9, 21, 63, 271, 813, 1093, 1897, 2439, 3279, 5691, 7651, 9837, 17073, 22953, 68859, 296203, 888609, 2073421, 2665827, 6220263, 18660789]

約数ペア:

[(1, 18660789), (3, 6220263), (7, 2665827), (9, 2073421), (21, 888609), (63, 296203), (271, 68859), (813, 22953), (1093, 17073), (1897, 9837), (2439, 7651), (3279, 5691)]