19779948

素因数分解:

$2^2\times 3^2\times {\mathrm{549443}}^1$

素因数の和:549453

約数の個数: 18

約数和(自身を含む): 49999404

約数和(自身を除く): 30219456

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 549443, 1098886, 1648329, 2197772, 3296658, 4944987, 6593316, 9889974, 19779948]

約数ペア:

[(1, 19779948), (2, 9889974), (3, 6593316), (4, 4944987), (6, 3296658), (9, 2197772), (12, 1648329), (18, 1098886), (36, 549443)]