21085491

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{59063}}^1$

素因数の和:59090

約数の個数: 16

約数和(自身を含む): 34020864

約数和(自身を除く): 12935373

約数列:

[1, 3, 7, 17, 21, 51, 119, 357, 59063, 177189, 413441, 1004071, 1240323, 3012213, 7028497, 21085491]

約数ペア:

[(1, 21085491), (3, 7028497), (7, 3012213), (17, 1240323), (21, 1004071), (51, 413441), (119, 177189), (357, 59063)]