19980821481

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{127}}^1\times {\mathrm{1219607}}^1$

素因数の和:1219780

約数の個数: 16

約数和(自身を含む): 27475329024

約数和(自身を除く): 7494507543

約数列:

[1, 3, 43, 127, 129, 381, 5461, 16383, 1219607, 3658821, 52443101, 154890089, 157329303, 464670267, 6660273827, 19980821481]

約数ペア:

[(1, 19980821481), (3, 6660273827), (43, 464670267), (127, 157329303), (129, 154890089), (381, 52443101), (5461, 3658821), (16383, 1219607)]