21918831

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{439}}^1$

素因数の和:559

約数の個数: 32

約数和(自身を含む): 34214400

約数和(自身を除く): 12295569

約数列:

[1, 3, 11, 17, 33, 51, 89, 187, 267, 439, 561, 979, 1317, 1513, 2937, 4539, 4829, 7463, 14487, 16643, 22389, 39071, 49929, 82093, 117213, 246279, 429781, 664207, 1289343, 1992621, 7306277, 21918831]

約数ペア:

[(1, 21918831), (3, 7306277), (11, 1992621), (17, 1289343), (33, 664207), (51, 429781), (89, 246279), (187, 117213), (267, 82093), (439, 49929), (561, 39071), (979, 22389), (1317, 16643), (1513, 14487), (2937, 7463), (4539, 4829)]