21115672

素因数分解:

$2^3\times {\mathrm{163}}^1\times {\mathrm{16193}}^1$

素因数の和:16362

約数の個数: 16

約数和(自身を含む): 39837240

約数和(自身を除く): 18721568

約数列:

[1, 2, 4, 8, 163, 326, 652, 1304, 16193, 32386, 64772, 129544, 2639459, 5278918, 10557836, 21115672]

約数ペア:

[(1, 21115672), (2, 10557836), (4, 5278918), (8, 2639459), (163, 129544), (326, 64772), (652, 32386), (1304, 16193)]