19728274

素因数分解:

$2^1\times {\mathrm{89}}^1\times {\mathrm{137}}^1\times {\mathrm{809}}^1$

素因数の和:1037

約数の個数: 16

約数和(自身を含む): 30180600

約数和(自身を除く): 10452326

約数列:

[1, 2, 89, 137, 178, 274, 809, 1618, 12193, 24386, 72001, 110833, 144002, 221666, 9864137, 19728274]

約数ペア:

[(1, 19728274), (2, 9864137), (89, 221666), (137, 144002), (178, 110833), (274, 72001), (809, 24386), (1618, 12193)]