21278844

素因数分解:

$2^2\times 3^2\times {\mathrm{591079}}^1$

素因数の和:591089

約数の個数: 18

約数和(自身を含む): 53788280

約数和(自身を除く): 32509436

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 591079, 1182158, 1773237, 2364316, 3546474, 5319711, 7092948, 10639422, 21278844]

約数ペア:

[(1, 21278844), (2, 10639422), (3, 7092948), (4, 5319711), (6, 3546474), (9, 2364316), (12, 1773237), (18, 1182158), (36, 591079)]