21189807

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{4273}}^1$

素因数の和:4327

約数の個数: 24

約数和(自身を含む): 33337200

約数和(自身を除く): 12147393

約数列:

[1, 3, 9, 19, 29, 57, 87, 171, 261, 551, 1653, 4273, 4959, 12819, 38457, 81187, 123917, 243561, 371751, 730683, 1115253, 2354423, 7063269, 21189807]

約数ペア:

[(1, 21189807), (3, 7063269), (9, 2354423), (19, 1115253), (29, 730683), (57, 371751), (87, 243561), (171, 123917), (261, 81187), (551, 38457), (1653, 12819), (4273, 4959)]