21699321

素因数分解:

$3^1\times 7^1\times {\mathrm{643}}^1\times {\mathrm{1607}}^1$

素因数の和:2260

約数の個数: 16

約数和(自身を含む): 33137664

約数和(自身を除く): 11438343

約数列:

[1, 3, 7, 21, 643, 1607, 1929, 4501, 4821, 11249, 13503, 33747, 1033301, 3099903, 7233107, 21699321]

約数ペア:

[(1, 21699321), (3, 7233107), (7, 3099903), (21, 1033301), (643, 33747), (1607, 13503), (1929, 11249), (4501, 4821)]