19910751

素因数分解:

$3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{20173}}^1$

素因数の和:20230

約数の個数: 16

約数和(自身を含む): 30987264

約数和(自身を除く): 11076513

約数列:

[1, 3, 7, 21, 47, 141, 329, 987, 20173, 60519, 141211, 423633, 948131, 2844393, 6636917, 19910751]

約数ペア:

[(1, 19910751), (3, 6636917), (7, 2844393), (21, 948131), (47, 423633), (141, 141211), (329, 60519), (987, 20173)]