19898907

素因数分解:

$3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{20161}}^1$

素因数の和:20218

約数の個数: 16

約数和(自身を含む): 30968832

約数和(自身を除く): 11069925

約数列:

[1, 3, 7, 21, 47, 141, 329, 987, 20161, 60483, 141127, 423381, 947567, 2842701, 6632969, 19898907]

約数ペア:

[(1, 19898907), (3, 6632969), (7, 2842701), (21, 947567), (47, 423381), (141, 141127), (329, 60483), (987, 20161)]