21998072

素因数分解:

$2^3\times {\mathrm{71}}^1\times {\mathrm{38729}}^1$

素因数の和:38806

約数の個数: 16

約数和(自身を含む): 41828400

約数和(自身を除く): 19830328

約数列:

[1, 2, 4, 8, 71, 142, 284, 568, 38729, 77458, 154916, 309832, 2749759, 5499518, 10999036, 21998072]

約数ペア:

[(1, 21998072), (2, 10999036), (4, 5499518), (8, 2749759), (71, 309832), (142, 154916), (284, 77458), (568, 38729)]